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When Do Babies Start Talking? A Parent's Guide to First Words and Milestones

Most babies say their first word around 12 months, but the range is wide and normal. Here is the full talking timeline from babbling to first words to the vocabulary explosion, drawn from the WHO, the UK's NHS, and child-development experts worldwide.

The First100 Team · June 20, 2026 · 14 min read

Most babies say their first real word around their first birthday, give or take a few months. Some start at 9 months, others closer to 15 or 16 months, and all of that falls inside the normal range. The first word is the headline, but it sits at the end of a year of steady build-up: cooing, then babbling, then a small handful of words, then a sudden rush. This guide walks through that whole arc, with milestone ages drawn from the World Health Organization, the UK's NHS, and child-development experts worldwide, so you can see where your child is and what tends to come next.

The short answer: a typical first-words timeline

Talking is not a switch that flips. It is a sequence, and each stage gives you a preview of the next one. Here is the broad shape of the first three years, with the ages most children hit each marker.

Age What you typically hear
0 to 3 months Crying, cooing, and the first soft vowel sounds
4 to 6 months Playful sounds, squeals, raspberries, and the start of babbling
9 months Repeated babble strings like "mamamama" and "bababa"
12 months A first word, often "mama" or "dada" used to mean a specific person
15 to 18 months A growing handful of words, usually three or more besides "mama" and "dada"
18 to 24 months The vocabulary jump, around 50 words, and the first two-word combinations
2 to 3 years Short sentences, back-and-forth conversation, and questions

The ages in this table are typical, not deadlines. Health bodies agree on this point but state it differently: London's Great Ormond Street Hospital, part of the NHS, says outright that "the age at which a child begins to produce his or her first words varies enormously," while the US CDC frames its checklists around what most children (75 percent or more) can do by a given age. Both descriptions point the same way: a child who is a little ahead or behind on any one line is common. Steady forward movement across stages tells you far more than the timing of a single milestone.

Before the first word: cooing and babbling

Long before a recognizable word arrives, your baby is rehearsing. In the first few months you get cooing, those drawn-out vowel sounds like "ooh" and "aah." By around 4 to 6 months, babies start adding consonants and playing with pitch, which is where babbling begins.

Babbling is the practice phase of speech. It is your baby experimenting with the muscles, breath, and timing that real words require. By 9 months, the CDC notes that most babies make "a lot of different sounds like 'mamamama' and 'bababababa.'" Those long repeated strings are a great sign. They mean the speech machinery is coming online.

A useful thing to know: early "mama" and "dada" sounds usually start as babble, not as naming. A 9-month-old saying "mamamama" is not necessarily calling for you yet. The shift from sound to meaning is exactly what the first-word milestone is about.

The first word: usually around 12 months

By their first birthday, most babies say their first true word, and it often is a name for a parent. The WHO's early childhood guidance places a few first words around the one-year mark, and the CDC lists three language markers for 12 months: a baby calls "a parent 'mama' or 'dada' or another special name," waves "bye-bye," and "understands 'no.'" The NHS draws the window a little wider, noting that children typically attempt their first words between 12 and 18 months.

The distinction that makes "mama" count as a first word is intent. When your baby looks at you, says "mama," and clearly means you, that is the milestone. The same sound aimed at a stranger or said into the air is still babble. First words tend to be the people, objects, and actions a baby cares about most: a parent, a pet, a favorite food, "more," "up," "bye."

Plenty of healthy babies say their first word a bit before or after 12 months. A word at 9 or 10 months is early but not unusual. A first word closer to 14 or 15 months, paired with strong comprehension and lots of babbling, is also within the normal range.

Comprehension runs ahead of speech

One of the most reassuring facts for parents is that understanding comes well before talking. Long before your child can say "ball," they can find the ball when you ask for it. This receptive language is the foundation, and it is often a better signal of progress than the spoken word count.

By 12 months, babies typically understand simple requests and respond to "no." By 18 months, the CDC expects a child to follow "one-step directions without any gestures, like giving you the toy when you say, 'Give it to me.'" If your child clearly understands a lot but says little, that gap is common and usually closes on its own. Comprehension is the better thing to watch.

The word explosion: the leap around 18 to 24 months

Between roughly 18 and 24 months, many toddlers go through what parents call the word explosion, or vocabulary spurt. Words that were trickling in start to pour. A child who had ten words at 18 months can have dozens within a couple of months.

The numbers line up across countries. The CDC marks 18 months as the point where a toddler tries "to say three or more words besides 'mama' or 'dada.'" By 24 months, Great Ormond Street Hospital describes a child who has "built up a core vocabulary of about one to two hundred words, and learned to join two words together," and the US-based ASHA expects a two-year-old to "use and understand at least 50 different words" and to "put two or more words together, like 'more water' or 'go outside.'"

Those first two-word combinations are a bigger deal than they sound. "More milk," "go outside," and "daddy up" show your toddler is grasping grammar: that word order carries meaning. That is the bridge from single words to sentences.

From two words to conversation: ages 2 to 3

Once two-word phrases are reliable, sentences and real conversation follow quickly. By age 3, the CDC expects a child to talk "with you in conversation using at least two back-and-forth exchanges," ask "'who,' 'what,' 'where,' or 'why' questions," and say "their first name when asked."

This is also the stretch where a child's speech becomes clearer to people outside the family. A 2-year-old may be understood about half the time by strangers; by 3, most of what they say is intelligible to others. Pronunciation keeps maturing for years after that, so it is normal for a 3-year-old to still soften or swap certain sounds.

Do bilingual babies talk later?

This is one of the most common worries for families raising children with more than one language, and it is where many First100 families live. The short, well-supported answer: bilingual children hit the same language milestones at the same ages as monolingual children.

The research consensus here is broad and international. François Grosjean, emeritus professor of psycholinguistics and one of the field's most-cited authorities, puts it plainly: "the main milestones are reached within the same age spans in both monolingual and bilingual children" (Psychology Today). Bilingualism Matters, the research centre at the University of Edinburgh, makes the same case from the European side, and the US-based ASHA tells parents directly that "you will not confuse your child, cause or worsen speech or language problems, or slow down their learning by using your languages." A few specifics worth knowing:

  • Count both languages together. A bilingual toddler might have 30 words in one language and 25 in another. Counted separately, each looks low. Counted together, the total vocabulary is right on track. This is the single most common reason bilingual kids look "behind" when they are not.
  • Mixing languages is normal. When a toddler blends two languages in one sentence, that is not confusion. ASHA calls it "a normal part of learning and using more than one language," and Bilingualism Matters describes language mixing as natural rather than a problem to correct.
  • Speak the language you know best. ASHA's guidance is to "communicate with your child in the language(s) you are most comfortable using," and the NHS tells parents to "talk to your child in whatever language feels comfortable to you." Rich, natural input in a parent's strongest language beats stilted input in a weaker one.

There is a real exception worth flagging. A genuine speech or language problem shows up in both of a child's languages, not just one. As ASHA puts it, "some children do have speech or language problems that show up in all languages." If you see delays across every language your child hears, that is worth raising with a professional, and bilingualism is not the cause.

This is also where a first word in your family's language carries real weight. A baby's first words are the people and things they love most, and for many families that vocabulary lives in Somali, Twi, Vietnamese, or Arabic, not only in English. A child who hears those words spoken warmly and often, with pictures and real native pronunciation, builds a heritage language right alongside the community one. First100 is built for that: illustrated, audio-first first-100-word apps in languages that most learning tools skip, so a child's earliest words can be in the language of home. If you are raising a bilingual toddler, you can explore First100 in your family's language and start with the words your family actually uses at the dinner table.

Signs to watch and when to talk to your pediatrician

Ranges are wide, and most "late" talkers catch up fine. Still, there are points where a conversation with your child's doctor is the right move. The CDC advises parents to act early and talk with a doctor if a child "is not meeting one or more milestones," has "lost skills they once had," or "you have other concerns."

Some practical signals worth raising with a pediatrician:

  • No babbling by around 9 months
  • No words by around 15 to 16 months
  • No two-word phrases by around age 2
  • Losing words or skills your child previously had, at any age
  • A child who does not seem to understand simple requests, separate from whether they talk

Two things make acting early easy. First, you do not need to wait for a referral or a diagnosis. In the US, the CDC notes you can request a free evaluation through your state's early intervention or "Child Find" system on your own; in the UK, the NHS routes the same concern through your GP or health visitor. Second, early support works: the CDC is clear that acting early on a possible delay can make a real difference. Raising a concern is never an overreaction. If everything is on track, you get peace of mind. If it is not, you have started early, which is exactly what helps most.

How to encourage your baby's first words

You do not need flashcards or drills. The WHO's nurturing-care guidance for early development comes down to the same simple ingredients in every country: "talking and singing," frequent eye contact, and play, starting from birth. A few things that genuinely move the needle:

  • Narrate your day. Talk through what you are doing, even before your baby can respond. "We are putting on your socks. One sock, two socks." The volume and richness of words a child hears strongly predicts their own vocabulary.
  • Follow their lead. When your baby looks at or points to something, name it and say a little about it. Attention plus words is how meaning sticks.
  • Talk back to babble. When your baby coos or babbles, respond as if it were a real turn in conversation. Pause, let them "answer," then reply. This teaches the rhythm of dialogue.
  • Read together every day. Picture books are vocabulary on demand. Point to images, ask "where is the dog?", and name what you see. By age 2, the CDC expects a child to "point to things in a book when you ask," and shared reading is how that skill grows.
  • Cut background noise. Conversation works best when a screen or TV is not competing. Face-to-face, back-and-forth time is where words are learned.
  • Use the words of home. Sing the lullabies, name the foods, and use the endearments from your own language. Children learn from the language their caregivers speak most naturally, and heritage words count fully toward their development.

FAQ

What is the first word most babies say?

First words are usually the people and things a baby cares about most, which is why "mama" and "dada" are so common. Other early favorites include "bye," "up," "more," a pet's name, or a favorite food. The CDC lists calling a parent "mama" or "dada" with meaning as a typical 12-month milestone.

Is it normal for a 1-year-old to not talk yet?

Often, yes. The first word arrives anywhere in a wide window around the first birthday, and the NHS notes many children attempt their first words anywhere between 12 and 18 months. Look at the whole picture: a 12-month-old who babbles a lot, understands simple words, points, and responds to their name is showing strong language development even without a clear first word. If there is no babbling by 9 months or no words by 15 to 16 months, it is worth checking in with your pediatrician.

When do babies say "mama" and mean it?

Babies often make the "mama" sound during babbling as early as 9 months, but using it to mean a specific person usually lands around 12 months. The milestone is intent: saying "mama" while looking at and reaching for you, not just producing the sound.

Do bilingual babies start talking later than monolingual babies?

No. The research consensus across Europe and North America is that bilingual children reach the same milestones at the same ages, and learning two languages does not cause delays or confusion. The key is to count both languages together when tallying vocabulary, since a child's words are often split across them.

When do babies start speaking in full sentences?

Two-word combinations like "more milk" typically appear around 24 months. Longer phrases and short sentences build over the third year, and by age 3 most children hold a back-and-forth conversation with at least two exchanges.

When should I worry about a speech delay?

Talk with your pediatrician, GP, or health visitor if your child shows no babbling by about 9 months, no words by 15 to 16 months, or no two-word phrases by age 2, or if they lose words or skills they once had. The CDC encourages acting early and notes you can request a free evaluation through your state's early intervention system without a referral.

The milestone ages in this guide draw on the World Health Organization's nurturing-care guidance for early childhood development, the UK's NHS (including Great Ormond Street Hospital), the research centre Bilingualism Matters at the University of Edinburgh, the work of psycholinguist François Grosjean, the US CDC's "Learn the Signs. Act Early." program, the American Speech-Language-Hearing Association (ASHA), and the American Academy of Pediatrics. Every child develops on their own timeline. This article is for general information and is not a substitute for advice from your child's doctor.

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