By 18 months old, toddlers typically have a vocabulary of about 50 to 100 words. However, this can vary widely depending on the child's development and environment. At this age, many children begin to combine two words into simple phrases and understand many more words than they can say.

Key Points:

• Average vocabulary: 50–100 words
• Language skills: Starting to combine two-word phrases (e.g., "more milk")
• Understanding: Comprehends many more words than they can speak
• Variability: Some children may have fewer or more words at this stage

If you have concerns about a child's language development, consulting a pediatrician or speech-language pathologist can provide personalized guidance.