
Last updated 2026-07-09
TL;DR
At 18 months, most toddlers say between 10 and 25 words and understand far more than they say. They point to ask for things, imitate new words, and follow simple one-step directions. Fewer than 10 words, no pointing, or no word imitation by 18 months are recognized red flags. Each one warrants a speech-language evaluation right away, not a wait-and-see approach.
What speech and language skills should an 18-month-old have?
By 18 months, a typical toddler says at least 10 words and adds new ones regularly. That's the benchmark most clinicians use, set by the American Speech-Language-Hearing Association [1]. Some guidelines put the expected range as high as 25 words, because vocabulary growth at this age is uneven. A child might plateau for a few weeks, then add five words in a single week. That variation is normal.
But word count is only part of the picture. At 18 months, a toddler should also be doing all of these:
- Pointing to objects or pictures when you name them
- Following simple one-step directions without a gesture cue ("Get your shoes")
- Using words or pointing to get what they want, rather than only crying or pulling
- Imitating words they hear, even imperfectly
- Using words consistently, more than once or twice and never again [2]
Receptive language, meaning what the child understands, typically runs well ahead of expressive language at this age. An 18-month-old who says only 12 words but clearly understands 50 or more is in a very different situation from one who seems to understand little and says little. Both deserve attention. The clinical picture is different.
Jargon is the musical string of babble that sounds like a sentence but has no real words in it. By 18 months, it should be giving way to recognizable words. If a child is still mostly jargoning with almost no true words, flag it.
How many words should an 18-month-old say?
Ten words is the floor most clinicians cite, with many typically developing toddlers producing closer to 20 or more [1][3]. The American Academy of Pediatrics uses 10 words as the lower threshold for the 18-month well-child screening [2].
Here's how to count correctly. A "word" at this age means any consistent sound or approximation a child uses to mean a specific thing. "Ba" for bottle counts if the child uses it reliably and means bottle by it. "Moo" for cow counts. "Dada" counts only if the child uses it to refer to a specific person, more than as a sound.
What does not count: sounds the child makes randomly, sounds they only made once, or sounds that mean different things at different times.
The 10-word threshold is a floor, not a target. If a child has exactly 10 words but they're all things like "mama," "dada," "no," and "more," with no nouns for objects, that's a thinner vocabulary than it looks. The better sign of healthy language is that words keep getting added. A child with 8 words in week one and 15 by week three is on a different trajectory than one who has had the same 8 words for three months.
What are the red flags for speech delay at 18 months?
Speech-language pathologists and pediatricians watch for specific warning signs at 18 months. Any one of these should prompt a referral for evaluation, not a wait-and-see approach [1][2][3]:
- Fewer than 10 words (some sources say fewer than 6 to 8 words by 15 to 16 months, making 18 months even more urgent)
- No consistent word use at all
- No pointing, either to request things or to share interest (called declarative pointing)
- No imitation of new words or actions
- Loss of words the child previously used (regression is especially significant)
- Does not understand simple directions
- Does not respond to their own name consistently
- No joint attention: the child doesn't look back at you when they find something interesting
Word loss carries extra weight. A child who had 15 words and now has 5 is in a more urgent situation than a child who has slowly been adding words but is just running behind. Regression is one of the early signs that can accompany autism spectrum disorder, and it warrants evaluation even if a child otherwise looks on track [4].
Echolalia, which is repeating words or phrases they've heard rather than using original language, is normal in small amounts at this age. But if a child's communication is almost entirely echolalia, bring it up with a speech-language pathologist. Our echolalia meaning article covers what it signals developmentally.
Is there a difference between a speech delay and a language delay at 18 months?
Yes, and the distinction shapes what kind of help a child needs. Speech is the physical production of sounds: articulation, fluency, and voice. Language is the system of vocabulary, understanding, grammar, and social use. A child can be behind in one and fine in the other.
A speech delay means the child has trouble making sounds clearly enough to be understood. At 18 months, parents and familiar caregivers should understand about 25 percent of what a toddler says; strangers will understand less [1]. If even parents can rarely make out what a child is trying to say, that can point to a speech-sound or motor speech issue.
A language delay means the child is behind on how many words they know, how well they understand, or how they use communication to connect with people.
Some toddlers have clear articulation but a small vocabulary. Others talk constantly in unintelligible strings, which suggests the language is there but speech-sound production is lagging.
Childhood apraxia of speech is a specific motor speech disorder where the brain has trouble coordinating the movements needed to produce words, even when the child clearly wants to communicate. It's distinct from a general language delay and needs its own type of therapy. If a child understands far more words than they can produce, and shows frustration when trying to speak, apraxia of speech is worth raising with a speech-language pathologist.
How are 18-month-olds screened for speech delays?
The 18-month well-child visit is the standard checkpoint. The AAP recommends developmental surveillance at every well-child visit and formal developmental screening at 9, 18, and 30 months [2]. At 18 months, the pediatrician should be asking about words, pointing, and social engagement.
Common screening tools at this visit include the Ages and Stages Questionnaires (ASQ-3) and the Modified Checklist for Autism in Toddlers, Revised (M-CHAT-R/F). The M-CHAT-R/F screens specifically for autism risk, and it's recommended at both 18 and 24 months [4].
If a screen comes back positive or borderline, the next step is a referral to a speech-language pathologist (SLP) for a full evaluation. That evaluation goes deeper than any questionnaire: an SLP assesses receptive and expressive language, speech sounds, social communication, and oral motor function.
One thing worth knowing: you don't have to wait for a pediatrician referral. In most U.S. states, you can contact your state's early intervention program directly and request an evaluation at no cost to your family [5]. Children under age 3 are covered under Part C of the Individuals with Disabilities Education Act (IDEA), which requires states to provide free evaluations and services to eligible children. Under IDEA Part C, states must complete evaluations within 45 days of referral [5].
What is early intervention, and does it actually help?
Early intervention (EI) is a federally mandated program for children birth to age 3 who have developmental delays or conditions that put them at risk. Under Part C of IDEA, eligible children get services at no cost to families, regardless of income [5]. Services can include speech-language therapy, occupational therapy, and developmental intervention, usually delivered in the child's home.
The research on early intervention for speech and language delays is consistent: earlier treatment leads to better outcomes. A meta-analysis by James Law and colleagues, published in the Journal of Speech, Language, and Hearing Research, found that children who got speech-language intervention showed significantly better expressive and receptive language outcomes than those who didn't, with stronger effects when intervention started earlier [6].
The practical catch is that EI services vary a lot by state. Some states have well-funded programs with short wait times; others have backlogs. Knowing you can self-refer (you call the program directly, no doctor's note required) can cut weeks off the timeline.
You can find your state's early intervention contact through the CDC's Act Early program or the IDEA website. Our early intervention guide walks through the referral and what to expect.
One honest caveat: not every child with a speech delay at 18 months will need formal therapy. Some late talkers do catch up on their own, particularly those with strong comprehension, good social engagement, and no other developmental concerns. But research gives us no reliable way to predict which children will catch up without an evaluation. "Wait and see" is not a clinical recommendation. It's a decision made without information.
What can parents do at home to support speech development?
The home language environment is a huge factor in how vocabulary grows. The Hart and Risley research from the 1990s, later refined and debated, pointed to the quantity and quality of language children hear as a major driver [7]. Newer work has shifted the focus from raw word count to conversational turns, the back-and-forth exchanges between a child and a caregiver, as the more predictive variable.
Here's what actually works, based on the research:
Follow the child's lead. Talk about what the child is looking at or doing, not what you want them to look at. If they're staring at the dog, that's your moment to say "dog" or "the dog is running."
Expand their attempts. If the child says "ba," you can say "ball, yes, that's a big ball." You're not correcting them. You're modeling the fuller version.
Reduce questions, increase comments. Parents often quiz toddlers nonstop ("What's that? What color is it?"). Questions put kids on the spot. Comments invite them in without pressure.
Read together daily. Shared book reading at this age has been studied heavily. Dialogic reading, where you pause, point, and let the child join in rather than reading straight through, works better than passive reading [7].
Limit passive screen time. The AAP recommends avoiding screen media other than video chatting for children under 18 months, and limiting 18-to-24-month-olds to one hour per day of high-quality programming, with a caregiver present to connect the content to real life [2].
For families who want a structured way to practice these strategies, the Little Words app gives parents guided activities that mirror what SLPs recommend for at-home language support, tailored to where your child actually is. You can find out if it fits your child at littlewords.ai/start.
None of these replace an evaluation when there are real red flags. Think of them as the floor, not the ceiling.
Could an 18-month speech delay mean autism?
A speech or language delay is one of the most common early signs of autism spectrum disorder, but a delay does not mean a child has autism. Most children with speech delays at 18 months do not have autism. And some autistic children have typical or even advanced language early on.
The signs that raise autism-specific concern, beyond the speech delay itself, include:
- Limited or inconsistent eye contact
- Not responding to their name by 12 months (which should definitely be established by 18 months)
- Not pointing to share interest by 14 months
- Not showing things to others
- Loss of previously acquired language or social skills
- Restricted or repetitive behaviors (lining up toys, strong need for sameness)
- Unusual sensory responses
The M-CHAT-R/F screen at the 18-month visit looks for these patterns [4]. A positive screen doesn't diagnose autism. It triggers further evaluation. A formal autism diagnosis requires a full developmental evaluation, usually with a psychologist or developmental pediatrician.
If autism is a concern, getting a full evaluation sooner rather than later genuinely matters. Autism-specific speech therapy and autism spectrum speech therapy approaches differ in meaningful ways from general speech-language intervention, and earlier access to the right support helps.
For children with very limited functional communication at this age, whatever the diagnosis, augmentative and alternative communication (AAC) is an option even for toddlers. There's no evidence that using aac devices reduces speech development. If anything, the research points the other way.
When should you call a speech therapist, and how do you find one?
Call now if your 18-month-old has fewer than 10 words, no consistent pointing, no word imitation, or any loss of previously used words. Don't wait for the next well-child visit if it's more than a few weeks off.
You have two main paths:
Path 1: Early intervention (under age 3). Call your state's EI program directly. No referral needed. Evaluation is free under federal law, and if the child qualifies, services are free or very low-cost [5]. This is the fastest and least expensive route for most families.
Path 2: Private speech-language pathologist. A private SLP can often schedule an evaluation faster than EI. Cost varies a lot: initial evaluations typically run $200 to $500 out of pocket, and ongoing therapy sessions run $100 to $250 per hour, though many practices take insurance [8]. Some families do both: EI services plus private therapy on the side.
Online speech therapy has grown and can be a practical option for families in areas with few SLPs or long wait times. Telepractice for early childhood speech and language has research support, and ASHA recognizes it as an appropriate service delivery model [1].
When looking for an SLP, find someone licensed in your state who holds ASHA's Certificate of Clinical Competence (CCC-SLP). For a toddler, ask about their experience with children under age 3 and with whatever concerns are most relevant to your child.
What's the difference between a late talker and a child with a language disorder?
"Late talker" is an informal term for a toddler who is behind on expressive language but has typical comprehension, social skills, and other development. Roughly 10 to 15 percent of toddlers are late talkers [3]. About half catch up on their own by school age without formal intervention. The other half keep struggling and may show lasting language differences through the school years.
The problem is that we still can't reliably tell at 18 months which group a given child will fall into. Research links better catch-up rates to strong receptive language, good social engagement, and a family history of late talking with eventual catch-up. It links persistent delay to limited comprehension, limited imitation, and other developmental concerns.
A language disorder is a more persistent condition where language acquisition is significantly below what's expected for the child's age and cognitive ability, and it doesn't resolve on its own. Children with language disorders typically need ongoing intervention.
The line between late talker and language disorder often can't be drawn definitively at 18 months. That's one reason evaluation and monitoring matter: an SLP can track a child's trajectory over time and adjust the plan. Waiting at home gives you none of that information.
What milestones come right before and right after 18 months?
Knowing the developmental arc around 18 months puts this checkpoint in context.
| Age | Expressive language | Receptive language | Social communication |
|---|---|---|---|
| 12 months | 1-3 words; babbling with consonants | Responds to name; understands "no" | Waves bye-bye; joint attention emerges |
| 15 months | 5-10 words | Points to 1-2 body parts on request | Points to request; shows objects to caregivers |
| 18 months | 10-25 words | Follows 1-step directions; identifies pictures | Declarative pointing; uses words + gesture |
| 24 months | 50+ words; beginning 2-word phrases | Understands 2-step directions | Parallel play; asks simple questions |
| 30 months | 200+ words; 3-word sentences | Understands most simple conversation | Takes conversational turns; uses pronouns |
Sources: ASHA norms [1], AAP developmental milestones [2], NIDCD statistics [3].
The jump from 18 to 24 months is often the most dramatic in the toddler years. A child who goes from 10 words at 18 months to 50 words and two-word phrases by 24 months is right on track. A child who still has 10 to 12 words at 24 months, or who hasn't started combining words, needs an evaluation.
Two-word combinations by 24 months is a firm milestone. Phrases like "more milk," "daddy go," or "big dog" show a child is starting to use language grammatically. That's a real cognitive and linguistic step beyond single words.
Frequently asked questions
My 18-month-old says no words at all. What should I do right now?
Contact your state's early intervention program today and request a free evaluation. You don't need a doctor's referral. Zero words at 18 months is a clear signal that warrants immediate evaluation, not waiting. Also call your pediatrician to discuss a referral to a speech-language pathologist. Federal law requires your state to complete the EI evaluation within 45 days of your request.
What counts as a word for an 18-month-old?
Any consistent sound or approximation a child uses to mean a specific thing counts. "Ba" for bottle counts if the child uses it reliably. Animal sounds like "moo" count. Made-up words the child uses consistently count. What doesn't count: sounds the child makes randomly, sounds used only once, or sounds that mean different things at different times.
My child understands everything but barely talks. Is that still a delay?
Yes, it's an expressive language delay and worth evaluating, though a child with strong receptive language has a better prognosis than one who struggles with both. Good comprehension is a positive sign, but it doesn't cancel out the need for evaluation if expressive vocabulary is below 10 words at 18 months. A speech-language pathologist can assess both areas and advise on next steps.
Can bilingualism cause a speech delay at 18 months?
Bilingualism does not cause speech delays. Bilingual children typically develop language on the same timeline as monolingual children when you count words across both languages combined. A bilingual 18-month-old might say 5 words in each language, totaling 10, which meets the typical threshold. Red flags apply the same way regardless of language exposure. An SLP experienced with bilingual children can assess appropriately.
Is it too early for speech therapy at 18 months?
No. Eighteen months is an appropriate age to start speech-language intervention when there are clear delays or risk factors. Early intervention services are designed for children under age 3. Research consistently shows better outcomes with earlier treatment. There's no developmental reason to wait; the brain is more plastic, not less, at this age.
My pediatrician said to wait and see. Should I listen?
You can push back. The AAP's own guidance recommends developmental screening at 18 months and referral when concerns are present, not watchful waiting as a first response to significant delays. If your child has clear red flags and your pediatrician is advising you to wait, ask specifically for a referral to a speech-language pathologist, or contact your state's early intervention program directly, which requires no referral.
Do boys talk later than girls? Does that explain my son's delay?
On average, boys lag slightly behind girls in early language, but the difference is modest and does not explain a significant delay. The 10-word threshold at 18 months applies to boys and girls alike. Using sex as a reason to dismiss a genuine concern is not clinically appropriate. If your son has fewer than 10 words or other red flags, pursue an evaluation regardless.
Could screen time be causing my 18-month-old's speech delay?
High amounts of passive screen time are associated with slower language development in research, though the relationship is correlational and complex. The AAP recommends avoiding screens other than video calls for children under 18 months, and limiting to one hour of high-quality programming per day at 18 to 24 months with caregiver involvement. Reducing screen time is a reasonable step, but it doesn't replace evaluation if red flags are present.
What is the M-CHAT-R/F and should my child be screened with it?
The M-CHAT-R/F (Modified Checklist for Autism in Toddlers, Revised with Follow-Up) is a validated autism screening tool recommended by the AAP at the 18 and 24-month well-child visits. It screens for early signs like lack of pointing, limited eye contact, and not responding to their name. A positive result triggers further evaluation, not a diagnosis. If your pediatrician hasn't mentioned it, ask for it.
My 18-month-old used to say words and stopped. Should I be worried?
Yes, and this needs prompt evaluation. Language regression (losing words a child clearly had) is a recognized red flag and is specifically associated with autism spectrum disorder, though it can have other causes too. Don't wait for the next scheduled visit. Contact your pediatrician today and request an urgent referral, and also reach out to your state's early intervention program directly.
What's the difference between early intervention and private speech therapy for a toddler?
Early intervention is a federally funded program for children under age 3, with evaluations and services provided free under IDEA Part C. Private speech therapy is paid out of pocket or through insurance, typically costs $100 to $250 per session, and can sometimes be accessed faster. Some families use both. EI services are delivered in the child's natural environment (usually home), while private therapy usually happens in a clinic.
How can I tell if my child's babbling is on track at 18 months?
By 18 months, true babbling should include a variety of consonant-vowel combinations, carry different intonation patterns that mirror speech, and be giving way to real words rather than replacing them. If a child is 18 months old and still mostly babbling with very few real words, or if babbling has few consonants and sounds very limited in variety, those are patterns worth discussing with an SLP.
Sources
- American Speech-Language-Hearing Association (ASHA), Speech and Language Developmental Milestones: By 18 months, typical toddlers say at least 10 words; points, imitates, and follows one-step directions; ASHA recognizes telepractice as appropriate service delivery
- American Academy of Pediatrics (AAP), Developmental Milestones and Surveillance: AAP recommends formal developmental screening at 9, 18, and 30 months; M-CHAT-R/F at 18 and 24 months; screen limits for under-18-month-olds and 18-24 month guidance
- National Institute on Deafness and Other Communication Disorders (NIDCD), Statistics on Voice, Speech, and Language: Approximately 10-15 percent of toddlers are late talkers; typical expressive vocabulary ranges cited for 18-month milestone norms
- Centers for Disease Control and Prevention (CDC), Autism Screening: M-CHAT-R/F is recommended at 18 and 24 months for autism screening; language regression is a recognized early autism sign
- U.S. Department of Education, IDEA Part C Early Intervention Program: Under IDEA Part C, states must provide free evaluations within 45 days for children birth to age 3; families can self-refer without a doctor's note
- Law, James et al. (2004), Journal of Speech, Language, and Hearing Research, "Efficacy of treatment for children with developmental speech and language delay/disorder": Meta-analysis found speech-language intervention produces significantly better expressive and receptive language outcomes; earlier intervention associated with stronger effects
- National Association for the Education of Young Children (NAEYC), Language and Literacy Development: Conversational turns and dialogic shared reading support early vocabulary growth more effectively than passive language exposure
- ASHA, Reimbursement and Payment for Speech-Language Services: Private SLP evaluation costs and session rates; CCC-SLP credential requirements for practicing clinicians
- CDC, Learn the Signs Act Early Developmental Milestones: CDC milestone checklists for 12, 15, 18, 24, and 30 months including expressive language, receptive language, and social communication benchmarks
- Zubrick, S.R. et al. (2007), Pediatrics, "Prevalence and Predictors of Language Competence and Impairment in Australian Children": Approximately half of late talkers identified at age 2 catch up by school age; comprehension and social engagement associated with better prognosis
