The Language Explosion!
Between 18 and 24 months, vocabulary explodes. Your baby learns new words every day, and "no" is the most important of all.
Development
- 20–50+ words: new words come daily
- Walks confidently and begins to run
- Climbs everywhere: chairs, stairs, anything that can be scaled
- "NO!" is the favorite word. The defiance has begun, and that is completely normal
- Pretend play: Feeds dolls, makes food in the play kitchen, "talks" on the phone
- Parallel play: Plays alongside other children, but not directly together yet
Growth
- Boys: Average 11.0 kg / 82 cm (24.3 lb / 32.3 in)
- Girls: Average 10.4 kg / 81 cm (22.9 lb / 31.9 in)
Sleep
- 11–14 hours per day (nighttime sleep 10–12 hours + 1 nap)
- One midday nap (1–2.5 hours), but some start protesting
- Consistent bedtime routines are more important than ever with a strong-willed toddler
Feeding
- 3 meals + 2 snacks: family food
- May be picky. This is normal and peaks around age 2
- Offer varied food without pressure: let your baby decide the amount
- Whole milk to drink (max 500 ml / 17 oz dairy products per day). Full-fat formula only if underweight, on doctor's advice
- Vitamin D: Continue with 400 IU (10 mcg) daily
Good to Know
- 18-month well-baby checkup: Your pediatrician will assess language, motor skills, and social development. This is a standard milestone visit recommended by the AAP
- Defiance is healthy: It's your baby's way of developing independence
- Tip: Offer choices ("Red or blue sweater?"), pick your battles, and acknowledge feelings
Activity Tip
Drawing! Give your baby large crayons and paper. The first scribbles are coming, and your baby is so proud. Great for fine motor skills and creativity.
Explore on Babysential
- Sleep Tracker. Track sleep and naps
- Milestones. Follow development
- Baby. More guides for your toddler's development
Tip: Your baby understands far more than they can say. Speak in short, clear sentences: "We're putting on shoes. Now we're going outside."