18–24 months

Running, climbing and the great word explosion

Words often take off spectacularly in this stretch, walking becomes running and climbing, and the tantrum era arrives in earnest. It's exhilarating and exhausting — frequently before breakfast.

Moving: running and climbing everything

Walking turns into a stiff-legged run, and climbing becomes a life mission — sofa, stairs, you. By around 2, most toddlers can run, kick a ball and walk up a few stairs with a hand or rail.

This is the age of supervising with your heart in your mouth. Making the environment safe to explore beats constant "no" — for their learning and your vocal cords.

Talking: the naming explosion

Many toddlers go from a handful of words to dozens in what feels like weeks — Raising Children notes anywhere from about 20 to 100 words by 18 months, with new ones arriving almost daily after that. Around the second birthday, most start putting two words together: "more milk", "daddy gone".

Understanding grows even faster — by 2 they typically understand around 200 words and simple questions like "where's your shoe?".

Don't expect clarity: families usually understand about half of what their toddler says at this stage, and strangers understand less. You are the official interpreter, and that's completely normal.

Feelings: why toddler brains melt down

Here's the tantrum arc in plain English: your toddler now has big desires and big feelings, but the part of the brain that manages impulses and puts on the brakes is barely built — Zero to Three notes real impulse control doesn't come in until around 3½ to 4. When feelings outrun words, the system overloads. That's a tantrum.

They genuinely can't calm themselves down yet, so they borrow your calm — this is co-regulation. Staying nearby, keeping your voice low, using few words and offering comfort once the storm passes teaches their brain, rep by rep, how calming down works.

Around other children, expect parallel play — happily alongside, not really with. Sharing is a skill for later; guarding their snacks like treasure is standard for now.

Eating and sleep

Fussy eating often peaks around 2 — the NHS notes up to a third of 2-year-olds could be described as fussy eaters. If your toddler is active, growing and well, they're getting enough, even on a diet that appears to be 90% toast.

Most toddlers are on one nap now, and 1–2 year olds need roughly 11–14 hours of sleep in 24, naps included. Night waking still happens for many — frustrating, common, and not a failure of anyone involved.

Add a word to theirs

When they say "dog", answer "big dog!" — repeating their word and adding one more is a simple, well-evidenced way to grow sentences. Speech therapists call it expansion; toddlers call it a conversation.

Keep narrating everyday life and reading together most days, even five minutes. Naming things in books when they point is word-learning gold.

Ride the tantrum with them

Head some off at the pass: tantrums thrive on hunger, tiredness and abrupt transitions, so snacks, naps and a "two more minutes, then home" warning genuinely help.

Mid-tantrum, less is more. Stay close, stay calm (or act it — that counts), keep them safe, and skip the reasoning until the storm passes. Afterwards, reconnect with a cuddle and a simple name for the feeling: "You were so cross."

Try to hold the line on whatever sparked it — giving in teaches that tantrums work. And if you handle one badly, welcome to the club; the next one is along shortly for another go.

Let them try, offer small choices

"Me do it" energy is rocket fuel — let them try the spoon, the shoes, the sock, and budget the extra minutes where you can. Competence and confidence are built exactly here.

Offer two acceptable choices — "red cup or blue cup?" — so they get a taste of control inside limits you've set. It defuses a surprising number of battles.

Games to play together

Bubble stomp low effort

Blow bubbles from your chair and let them chase and stomp. Maximum toddler output for minimum parental input — the dream ratio.
Sofa-cushion obstacle course low effort

Line up cushions to climb over and gaps to step across while you referee from the sofa. Rearrange occasionally to look involved.
Animal noises quiz low effort

Make a moo, a woof, a meow and let them name the animal or find it in a book — then swap roles. Excellent from a horizontal position.
Sock sorting low effort

Tip out the odd-sock basket and hunt for pairs together — big socks, little socks, daddy's socks. Matching and naming, disguised as helping.
Where's teddy hiding? low effort

Hide teddy somewhere easy — behind a cushion, under the table — and hunt together with dramatic suspense. Hiding it while they watch is, at this age, still a great game.
Kick and chase a bit of energy

A soft ball, a hallway or patch of garden, and some enthusiastic kicking practice. This one does require you upright, but it's mercifully brief.

More games for tired parents →

Totally normal (even when it doesn't feel it)

A word count that seems behind a friend's child — vocabulary at this age ranges enormously, from about 20 words to well over 100 at 18 months.
Strangers understanding little of what they say — families catching about half is right on track for this stage.
Tantrums, even spectacular public ones — they're a sign of a normally developing brain that can't yet manage big feelings, not of bad parenting.
Playing next to other children rather than with them — parallel play is exactly what this age is supposed to look like.
A beige, repetitive diet — up to a third of 2-year-olds are fussy eaters, and an active, growing, generally well toddler is getting enough.
Deep attachment to a dummy, blanket or bear — comfort objects are normal and genuinely help little ones manage big days.
Still waking at night — extremely common well into toddlerhood.

Worth checking

You know your child best — if any of these ring true, or something just feels off, it's always OK to ask.

No clear single words by around 18 months — talk to your health visitor or GP, and ask about a hearing check as a first step.
Fewer than about 25 words, or no two-word combinations like "more milk", by around the second birthday — worth discussing (in many UK areas you can also self-refer to children's speech and language therapy).
Not walking by 18 months, or persistent walking only on tiptoes — have it checked.
Not pointing to show you interesting things, or not bringing objects over to share — mention it to your doctor or health visitor.
Doesn't follow simple instructions or seem to understand familiar words and names.
In the US, the 18- and 24-month well-child visits include development and autism screening questionnaires — an ideal moment to raise anything on this list.
Loses words or skills they once had, at any age — always worth discussing promptly.