
Last updated 2026-07-09
TL;DR
The /l/ sound typically develops between ages 3 and 6. Most children can say it correctly in all positions by age 6, though many SLPs allow until age 7 before calling it a disorder. Teaching it starts with tongue placement (tip up, on the ridge behind the top teeth), then moves from the isolated sound to syllables, words, phrases, and real conversation.
When should kids be able to say the /l/ sound?
Most developmental charts put /l/ as emerging around age 3 and mastered across all word positions by age 6 [1]. The American Speech-Language-Hearing Association notes that later sounds like /l/, /r/, /s/, and /z/ show the most disagreement between research studies, so some references cite age 5 as the upper edge of normal and others cite age 7 [1].
Here is the answer most SLPs actually use in the room. If a child still swaps /w/ or /y/ for /l/ after age 6 ("wion" for lion, "yeg" for leg), get a formal evaluation. That does not mean something is broken. It means the sound is late enough that a speech-language pathologist can make a confident call on whether therapy is worth doing.
Kids with a speech delay or those in early intervention speech and language therapy sometimes trail further on /l/ because their whole sound system started later. That lag is expected. It does not change the target or the practice sequence one bit.
One number is worth memorizing. A 2018 meta-analysis by McLeod and Crowe in the American Journal of Speech-Language Pathology reviewed 27 studies across 17 languages and found that 90% of English-speaking children produced /l/ correctly by age 6;0 [2]. That 90% mark is the benchmark most diagnosticians lean on.
Why do so many kids struggle with the /l/ sound?
The /l/ is a lateral approximant. To make it, the tongue tip lifts and presses the alveolar ridge (the bumpy shelf just behind the upper front teeth) while the sides of the tongue drop and let air spill out the sides. That is a lot of precise motor work for a small mouth.
The most common error is gliding: swapping /l/ for /w/ or /y/. "Lake" turns into "wake." "Lion" turns into "yion." It happens because /w/ and /y/ show up earlier in development and need far less tongue lift. The brain takes the shortcut.
A second common error is vocalization, where the child drops in a vowel instead, saying "ay-ion" for lion. This shows up a lot in blends (words like "blue," "flag," or "play"), where the /l/ rides behind another consonant and the motor load climbs even higher.
Autistic children sometimes look different here. Their errors can shift from attempt to attempt, which can mimic childhood apraxia of speech rather than a plain phonological delay. If the same word comes out three different ways on three tries, flag it to an SLP who works in autism spectrum speech therapy. Inconsistency points more toward a motor-planning problem than a phonological one [3].
What does correct /l/ placement actually look like?
This is where most parent guides quit early. They say "put your tongue behind your teeth" and stop. Here is the whole picture.
The tongue tip touches the alveolar ridge, the raised bumpy strip directly behind the upper front teeth. Not the teeth. Not the roof of the mouth further back. Right on that ridge. The sides of the tongue drop and stay low. The lips stay a little open and relaxed, never rounded. Voicing is on, because /l/ is voiced, so the vocal cords hum the whole time.
Quick test: have your child rest a finger on their throat and make the sound. They should feel a buzz. No buzz usually means they are whispering it or sneaking in a /w/.
For kids who cannot land that placement from words alone, tactile cues help. Dip a cotton swab lightly in peanut butter or cream cheese and dab a tiny bit on the alveolar ridge. Ask the child to reach that spot with their tongue tip. That physical target gives the tongue somewhere to aim. It is a real clinical tool SLPs have used for decades. Check for allergies first.
Once the tip stays up, add voice: "hum while your tongue is up there." That hum is basically /l/. A long, held "llllll" tells you the placement is locked in.
What is the correct sequence for practicing L words in speech therapy?
Speech therapy for any sound climbs a ladder from simple to complex. Skipping rungs is the number one reason home practice stalls out.
1. Isolation. The child holds a sustained /l/ on its own: "llllll." No word, no syllable. Just the sound. You want consistent, correct placement here, not speed.
2. Syllables. Move to CV (consonant-vowel) syllables: "la, lee, lo, lu, lay." Then VC syllables with /l/ at the end: "al, eel, ol, ul." Drill until accuracy passes 80% before moving up.
3. Words, by position. Initial position (word start) is usually easiest: lamp, leaf, lip, log, love. Then final position (word end): ball, bell, hill, mail, pool. Medial position (middle) is often the hardest: hello, follow, yellow, balloon, pillow.
4. Minimal pairs. Pair /l/ words with the child's error sound. If they say "wing" for "ling," run wing versus ling back to back. This sharpens phonological awareness and helps the ear catch the difference.
5. Phrases and sentences. "The lamp is on." "I love lemonade." Start with carrier phrases (same frame, one changing /l/ word) to keep the mental load light.
6. Structured conversation. Pick a topic the child loves and box in the vocabulary. A kid obsessed with Legos can hit dozens of /l/ words in one natural chat: "Let's look at this little piece. I'll put it on the left leg."
7. Generalization. This is the rung most home programs skip. The child has to use /l/ correctly in spontaneous speech with no reminder. That takes time and usually needs cues faded on purpose. Do not call it a win because they nail "lion" on a flashcard.
What are the best L words to practice at each level?
Below is a word list sorted by position and rough difficulty. These are not random picks. They are high-frequency (your child meets them every day) and they hit the error patterns /l/ tends to trip over.
| Position | Easy | Medium | Harder |
|---|---|---|---|
| Initial | lamp, leaf, leg, lip, log | lemon, lizard, ladder, laundry | library, lightning, lollipop |
| Final | ball, bell, hill, mail, tall | animal, bottle, candle, puzzle | beautiful, hospital, principal |
| Medial | hello, yellow | balloon, follow, pillow, silly | lollipop, umbrella, caterpillar |
| Blends (initial) | blue, fly, play | black, flag, sleep | blizzard, flashlight, playground |
| Blends (final) | old, help, milk | belt, melt, salt | bulb, elm, film |
A note on blends: /l/ blends (bl, cl, fl, gl, pl, sl) come in later than singleton /l/ and should never be the starting line. Most SLPs hold off on blends until singleton /l/ in all positions sits at 80% accuracy or better. If your child is in speech therapy for kids and blends keep showing up in homework early, ask the therapist exactly where they belong in the sequence.
Working on th words for speech therapy too? Don't stack the two sounds in one session. The tongue positions differ enough that mixing them early tends to breed confusion rather than accuracy.
How is L different from other late-developing sounds like TH?
Parents ask about /l/ and /th/ together because both land in therapy around the same age. They work very differently, though, and they are taught differently.
The /th/ sounds (voiced as in "the," voiceless as in "think") need the tongue tip to poke between or touch the back of the upper front teeth. The /l/ needs the tongue tip up and back on the alveolar ridge. One goes forward. The other goes up.
On timing, the voiced /th/ ("the") usually emerges around age 4 to 5, and the voiceless /th/ ("think") around age 5 to 7, which puts both in late-sound territory alongside /l/ [2]. The error patterns split too: kids usually swap /f/ for voiceless /th/ ("fink" for "think") or /d/ for voiced /th/ ("dis" for "this"), not the gliding you see with /l/.
When a child misses on both sounds, most SLPs choose based on stimulability (can the child make the sound at all with maximum cues?) and functional impact (which error muddies daily communication more?). There is no single right order. Some therapists run both at once in separate target sets. Others do one, then the other. The research does not clearly favor either route for kids without other conditions [4].
See our guide to th words for speech therapy for a full breakdown of that sound.
How many minutes a day should a child practice L words at home?
The honest answer: the research on home-practice dose is thinner than you would hope. Most studies measure clinic-delivered therapy intensity, not what parents do at the kitchen table.
Here is what we do know. Distributed practice (shorter sessions on more days) beats massed practice (one long block) for motor learning, and speech production is a motor skill [5]. Ten focused minutes five days a week will almost always generalize faster than one 50-minute Saturday marathon.
Most SLPs suggest 5 to 15 minutes of structured home practice a day, separate from the casual talking you do over meals and play. "Structured" means a set activity, a target word list, feedback from you, and a clear start and stop. That is different from just talking to your child more, though the extra talk helps too.
For little ones (ages 3 to 5), cap sessions at 5 minutes. Boredom and frustration actively wreck motor learning. For school-age kids, 10 to 15 minutes is fine. Stop before the fatigue hits. A session that ends in tears does real harm, because it pairs the sound with a bad feeling and pushes the child toward avoidance.
If you want something to fill the gaps between therapy sessions, tools like Little Words give kids structured, game-like practice they will actually sit through. No app replaces a trained clinician telling you whether the placement is truly correct, though.
What techniques do SLPs actually use to teach the /l/ sound?
Knowing the techniques lets you copy them at home and lets you judge whether what you see in a session makes sense.
Phonetic placement instruction. The clinician explains and shows correct tongue placement, often with a mirror so the child watches their own mouth. This is the base layer.
Tactile cuing. Placing a target (food, a tongue-depressor tap) on the alveolar ridge to give the tongue a physical goal. Useful for kids who cannot turn verbal instructions into movement.
Auditory bombardment. The clinician reads a list of /l/ words while the child just listens, sometimes with slight amplification. It is not a drill. It primes the ear to notice the sound. Work by Hodson and Paden suggests it speeds up how fast a child internalizes a target pattern [6].
Minimal pair contrast therapy. The child sorts pictures into two piles (lamp versus wamp, lake versus wake), hears the clinician model the difference, then produces both. Especially strong for kids whose errors are phonological rather than motor.
Core vocabulary approach. More common for kids with inconsistent errors (as in childhood apraxia), this drills a small set of personally meaningful words to automaticity before adding more. "Mom," "more," "mine" first, then words with /l/.
Successive approximation (shaping). If the child cannot make /l/ at all, the clinician rewards any tongue lift, then rewards closer and closer tries until the full sound appears. Operant conditioning applied to speech, and it works.
For kids with more layered profiles, pediatric speech therapy usually blends several of these in one session instead of running just one.
Does a child need a formal diagnosis to get speech therapy for /l/ errors?
No. In most U.S. states a parent can request a speech-language evaluation with no physician referral, and a child needs no medical diagnosis to receive speech therapy [7].
For kids age 3 and up, the Individuals with Disabilities Education Act (IDEA) entitles eligible children to free speech-language services through their public school when the speech sound disorder hurts educational performance [8]. A school SLP can evaluate and, if the child qualifies, provide services at no cost to the family.
For children under age 3, early intervention programs (IDEA Part C) provide evaluations and services at no cost or on a sliding scale by family income [8]. An isolated /l/ error alone may not qualify a child under 3, since /l/ is not expected before age 3 anyway. If /l/ is part of a wider speech delay, it likely will.
Private insurance coverage swings hard by state and plan. IDEA sets the rules for school-based services, but private coverage depends on how your plan classifies speech-language work. Some plans cover medically necessary speech therapy. Others cap sessions at 20 to 30 a year. Call your insurer before the first appointment.
Not sure whether your child's /l/ error crosses into disorder territory or is just developmental? A consult with an SLP is the cleanest answer. Many offer free 15-minute screenings. You can also look at online speech therapy if in-person access is tight.
What if a child cannot produce /l/ even with cues?
A small share of children are not stimulable for /l/, meaning they cannot make even a rough version with the best cues. This shows up more in kids with low oral tone, motor-planning trouble (like childhood apraxia of speech), or heavy phonological delays.
SLPs reach for a few extra moves here. One is building /l/ off a sound the child already owns. Many kids can make /n/, which also uses the alveolar ridge. Start from /n/ placement, then ask the child to slide the tongue tip a touch forward while voicing, and /l/ sometimes falls out.
A second is the "alligator mouth" trick: have the child open wide, set a mirror so they can see inside, and practice lifting just the tongue tip toward the ridge. Splitting the motor parts (opening, lifting) before combining them lightens the load.
For childhood apraxia of speech, the evidence points hardest at Dynamic Temporal and Tactile Cueing (DTTC) and the Nuffield Dyspraxia Programme-3 (NDP3), both built on intensive, carefully faded motor practice rather than phonological contrast [9]. Both need a trained clinician. Home practice for apraxia follows the SLP's structure to the letter. Improvising slows progress.
If a child has been in therapy six months and /l/ still has not shown up at all, ask for a re-evaluation to rule out motor or structural issues (including a short lingual frenulum, though that is a less common cause than the popular press implies).
How do you make L word practice fun for young children?
Engagement is not a bonus. It is a requirement for motor learning. A distracted or resistant child will not build the motor memory needed to carry the sound into real speech.
A few approaches that actually hold up with the 3 to 7 crowd:
Barrier games. Put matching sets of pictures or objects on each side of a small cardboard divider. The child describes what they see (using /l/ words), and you try to match the layout without peeking. "Put the lamp next to the lion." The child has a real reason to communicate, which keeps them in it.
Fishing games. Write /l/ words on paper fish, clip on a paper clip, and use a magnet on a string as the rod. Catch a fish, say the word three times correctly, keep the fish. Simple, and reliably motivating for the under-6 set.
Go Fish or Old Maid with /l/ picture cards. Any standard card game works. One rule: say the card's name clearly to ask for it or receive it.
Story retelling with planted /l/ words. Read a picture book stuffed with /l/ words (Lilly's Purple Plastic Purse, Leo the Late Bloomer) and have the child retell it. Use an expectant pause right when an /l/ word is coming.
Beat the clock. For older kids (age 6 and up), set a visible timer for two minutes and count correct /l/ productions. Save this for after accuracy is solid. You are building speed and fluency here, not teaching the sound cold.
For kids who refuse any structured drill, naturalistic teaching during play (picking up toys with /l/ names, narrating /l/-heavy play) is a real option. It just tends to move slower than structured practice for motor-level errors.
Is the /l/ sound taught differently for kids with autism?
The phonetic target does not change: tongue tip up, alveolar ridge contact, voiced lateral airflow. What changes is the approach, the pacing, and the sensory side.
Many autistic children have heightened oral tactile sensitivity, so the cotton-swab cue can be a nonstarter rather than a help. Visual cues often work better: mirrors, video modeling (watching someone make /l/ in slow motion), or diagram cards of the tongue position. Video modeling has a solid evidence base for teaching new skills to autistic children [10].
Some autistic children are heavily echolalic, echoing words and phrases they have heard rather than building new speech. If a child can echo /l/ words perfectly but cannot produce them on request, the motor skill exists. The target shifts from making the sound to using those words on purpose to communicate.
For nonverbal or minimally verbal autistic children, /l/ may not be the priority at all. AAC (augmentative and alternative communication) is often more urgent. Read more about alternative augmentative communication devices for autism if that is where your child is. AAC and speech therapy are not rivals. Research consistently shows AAC does not suppress speech and often supports it [11].
Autistic kids who also have apraxia (a common overlap) gain most from motor-based approaches like DTTC, delivered with predictable, low-demand sessions and plenty of preferred rewards. Matching home and clinic matters even more here, because generalization is usually harder for this group.
Frequently asked questions
At what age should I be worried if my child cannot say L?
Most SLPs use age 6 as the benchmark. A 2018 meta-analysis in the American Journal of Speech-Language Pathology found that 90% of English-speaking children produce /l/ correctly by age 6;0. If your child is 6 or older and still swaps /w/ or /y/ for /l/ consistently, schedule a speech-language evaluation. Between ages 3 and 6 it is within normal range and often resolves on its own.
What is the most common substitution for the L sound?
Gliding is the most common error: replacing /l/ with /w/ (so "lake" becomes "wake") or with /y/ (so "lion" becomes "yion"). Both happen because /w/ and /y/ develop earlier and need less precise tongue elevation. Less often, children drop /l/ entirely, especially at the end of words or inside consonant blends.
Can I teach my child the L sound at home without a speech therapist?
Yes, for many children with a straightforward /l/ substitution. Teach correct placement (tongue tip on the alveolar ridge), then drill syllables, then words by position (initial, final, medial), then phrases. If progress stalls after 8 to 12 weeks of consistent practice, or if errors come out different on repeat attempts, an SLP is the better path.
What are good L words to practice in speech therapy?
Start with initial-position words: lamp, leaf, leg, lip, log, lemon, ladder, lizard. Move to final position: ball, bell, hill, mail, tall. Medial position comes last: hello, yellow, balloon, pillow. For blends, wait until singleton /l/ is at least 80% accurate, then try blue, flag, play, sleep. High-frequency, meaningful words generalize faster than random lists.
How long does it take to correct an L sound error in speech therapy?
There is no universal number, but many children with a simple /l/ substitution improve a lot within 3 to 6 months of consistent therapy plus home practice. Kids with broader phonological delays, apraxia, or autism may take longer. Research on treatment intensity suggests more sessions per week beats the same total hours spread thin over more months.
Is l words speech therapy different from th words speech therapy?
The general ladder (isolation, syllables, words, phrases, conversation) is the same for both. The placement cues differ: /l/ needs the tongue tip up on the alveolar ridge, while /th/ needs the tip forward between or behind the front teeth. Error patterns differ too: /l/ errors are usually gliding (/w/ or /y/), while /th/ errors are usually stopping (/f/ or /d/).
Why does my child say L correctly sometimes but not other times?
Inconsistency across the same word is the hallmark of motor-planning trouble, sometimes called childhood apraxia of speech (CAS). It differs from a phonological error, which stays consistent (always /w/ for /l/). If your child says the same word differently on different tries, ask your SLP specifically about CAS. The treatment approach is different from standard articulation therapy.
How do schools decide if a child qualifies for speech therapy for L errors?
Public schools use IDEA eligibility criteria, which require the speech disorder to adversely affect educational performance. A single /l/ error in an otherwise typical child may not meet the bar at some schools. Criteria vary by state and district. Request an evaluation in writing. Under IDEA the process runs to a formal decision, and an SLP can walk you through eligibility.
Should I correct my child every time they mispronounce an L word?
No. Constant correction often raises self-consciousness and can make a child talk less, which is the opposite of the goal. SLPs usually recommend selective feedback: during a structured 10-minute practice session, give feedback on every production. Outside that session, use indirect recasting (repeat what the child said with the correct form) instead of direct correction. Keep talk positive and frequent.
What is a tongue placement cue for the L sound?
Dip a cotton swab lightly in peanut butter or cream cheese (check for allergies first) and dab a tiny bit on the alveolar ridge, the raised bumpy strip just behind the upper front teeth. Ask the child to touch that spot with their tongue tip. Once they can hold it there, ask them to voice (hum). The result is close to a correct /l/. The tactile target gives the tongue something concrete to aim for.
Are L blends harder than regular L words?
Yes, consistently. Blends like /bl/, /fl/, /pl/, /cl/, /gl/, and /sl/ make the child transition from one consonant into /l/ fast, a higher motor demand. Most SLPs wait until singleton /l/ in initial, final, and medial positions is at least 80% accurate before targeting blends. Jump to blends too early and accuracy drops while the child loses track of the target.
Does a tongue tie cause L sound errors?
Possibly, though less often than the popular press suggests. A restricted lingual frenulum (tongue tie) can limit the tongue-tip lift that /l/ needs. But many children with mild ties say /l/ fine because they compensate. If an SLP or physician suspects a structural limit after checking tongue mobility, they may refer to an ENT or oral surgeon. A functional assessment of tongue range of motion is the right first step, not automatic surgery.
Can an autistic child learn the L sound through video modeling?
Yes. Video modeling, watching a video of a person producing the target sound and words, has a solid evidence base for teaching new skills to autistic children. It works well when the child can rewatch the model at their own pace. Slow-motion video of tongue placement is especially handy when tactile cues are not tolerated because of oral sensory sensitivity. Use it as one part of a structured program, not a standalone fix.
Sources
- ASHA, Speech Sound Disorders: Articulation and Phonology (Practice Portal): The /l/ sound develops between ages 3 and 6, with variability across studies in the upper boundary.
- McLeod & Crowe (2018), American Journal of Speech-Language Pathology, 'Children's Consonant Acquisition in 27 Languages': 90% of English-speaking children produce /l/ correctly by age 6;0 based on meta-analysis of 27 studies.
- ASHA, Childhood Apraxia of Speech (Practice Portal): Inconsistent errors across identical words across attempts is a hallmark feature of childhood apraxia of speech.
- ASHA, Evidence Maps: Research does not strongly favor single-sound vs. multiple-sound targeting for children without comorbid conditions.
- Maas et al. (2008), American Journal of Speech-Language Pathology, 'Principles of Motor Learning in Treatment of Motor Speech Disorders': Distributed practice (shorter, more frequent sessions) is superior to massed practice for motor speech learning.
- Hodson & Paden (1991), Targeting Intelligible Speech, referenced in the ASHA Practice Portal: Auditory bombardment (listening to lists of target-sound words) increases the speed of phonological pattern internalization.
- ASHA, Information for the Public: Parents can request a speech-language evaluation without a physician referral in most U.S. states.
- U.S. Department of Education, IDEA: Individuals with Disabilities Education Act: IDEA Part B entitles eligible school-age children to free speech-language services; Part C covers children under age 3.
- ASHA, Childhood Apraxia of Speech (Practice Portal): Dynamic Temporal and Tactile Cueing (DTTC) and Nuffield Dyspraxia Programme-3 have the strongest evidence base for childhood apraxia of speech.
- Bellini & Akullian (2007), Exceptional Children, 'A Meta-Analysis of Video Modeling and Video Self-Modeling Interventions for Children with Autism Spectrum Disorders': Video modeling has a solid evidence base for teaching new skills to autistic children.
- ASHA, Augmentative and Alternative Communication (Practice Portal): Research consistently shows AAC does not suppress speech development and often supports it.
- CDC, Learn the Signs. Act Early. (Developmental Milestones): Federal developmental milestone guidance supports early evaluation when speech and language lag expected ranges.
- National Institute on Deafness and Other Communication Disorders (NIDCD), Speech and Language Developmental Milestones: NIDCD federal guidance describes typical ages for speech sound development and when to seek evaluation.
