Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “infantile”

infantile

adjective    /ˈɪn·fənˌtɑɪl/
of or relating to babies: infantile diseases If you describe the behavior of an older child or adult as infantile, you mean that it is foolish and is typical of a young child: infantile humor
(Definition of infantile adjective from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of infantile

Definitions of “infantile” in other dictionaries

Word of the Day

sail

When a boat or a ship sails, it travels on the water.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More