What to expect, when to worry, and how communication develops by 18 months
Life With an 18-Month-Old Toddler
Having an 18‑month‑old is such a fun time! You’re watching your child’s personality emerge. Suddenly, they have opinions about clothing choices—I truly thought I had several years before this happened. They’re ripping toys away from their older sibling (who you warned this would happen, considering the 3‑year‑old has been ripping toys from their hands for months on end). You’re chasing them around just to make sure you keep them alive (why do they love the stairs??).
They’re also figuring out how to get dressed—which includes wearing every person’s shoes around the house, even the ones that are 10 sizes too big. So between constantly cleaning up toys, making food, cleaning up from the food (it truly never ends—how is the kitchen never actually clean?!), and squeezing in your baby/toddler snuggles, you may notice that little voice creeping up more often, asking yourself: Is my 18‑month‑old’s communication on track?
I’m a speech‑language pathologist, and I still find myself asking this about my own 18‑month‑old. The tricky part about 18‑month‑old speech and language milestones is that there’s a large range of what’s considered developmentally appropriate. This is also a stage when your child has thoughts and opinions they want to communicate, but their expressive language just isn’t quite there yet. That gap can lead to frustration—for them and for you—and it’s completely normal.
At this age, speech and language development should be emerging and progressing, but it takes time, and every child truly develops at their own pace. Many toddlers experience a “speech explosion” sometime in the months ahead. Slow and steady really does win this race.
Below, I’ll break down speech and language milestones for 18‑month‑olds, including both receptive and expressive language skills, along with when to worry signs to watch for. Be sure to check out the printable 18‑month‑old milestone checklist PDF at the end!
Speech and Language Milestones at 18 Months Old
Before I get into the milestones, I want to give you a brief definition of receptive and expressive language.
Receptive language: ability to understand and process spoken language, including following directions and interpreting nonverbal cues.
Expressive language: ability to convey thoughts, wants and needs through words, sentences, gestures, or signs.
What is expected by 18 months old:
Receptive Language Milestones
- Rapid increase in understanding of language – hundreds of words
- Follows one-step commands (e.g., "bring me the ball")
- Identifies familiar people/objects/body parts
- Understands words for routine activities
- Points to pictures in books (e.g., "where is the dog?")
- Responds to their own name
- Understands simple questions like (e.g., “where is mama?”)
- Action words: understands common action verbs (e.g., “hug”, “stop”, “sit”)
- Understands far more than they can say
Expressive Language Milestones
- 10-50 words: mama, dada, common nouns (e.g., "ball", "milk")
- Use gestures like pointing or waving
- Imitate words/sounds (copies animal sounds)
- Starts combining words (e.g., "more eat", "help me")
- Use 4-6 specific consonant sounds (p, b, m, h, w, d, n)
- Word types: familiar people, objects (ball, cup) actions (go), and requests (more, up)
- Gestures & sounds: gestures (pointing, shaking head no) alongside words
- May use jargon (babbling with adult-like intonation)
- Early word combinations: begins pairing words, “no bed” or “mommy go”
- Consistency: words may not be pronounced exactly correctly, but should be an approximation and be consistent
- Intentionality: Using sounds or words with specific intent to communicate, rather than just babbling
18-Month-Old Speech Delay Warning Signs
Your child may not have hit ALL of the milestones, and that's okay! Below are warning signs to discuss with your child's pediatrician about a potential referral for a formal evaluation with a speech-language pathologist (SLP).
Receptive Language Concerns
- Does not follow simple, one-step instructions
- Does not use gestures like waving or pointing
Expressive Language Concerns
- Does not use at least 5-10 words
- Does not imitate sounds or actions
About the Author:
Meghan Plaza, M.S., CCC-SLP, is a licensed speech-language pathologist and mom of two young children. With experience in home health, schools, and rehabilitation settings, Meghan helps parents support their child’s speech and language development using simple, practical strategies that fit into everyday routines.
Disclaimer: This content is for informational purposes only and is not a substitute for professional evaluation, diagnosis, or treatment. If you have concerns about your child’s development, please consult a licensed speech-language pathologist or your pediatrician.
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