infantile

adjective in·fan·tile \ ˈin-fən-ˌtī(-ə)l , -tᵊl , -ˌtēl , -(ˌ)til \
Updated on: 10 Nov 2017

Definition of infantile

1 : of or relating to infants or infancy
2 : suitable to or characteristic of an infant; especially : very immature
  • infantile humor

infantility

play \ˌin-fən-ˈti-lə-tē\ noun

Examples of infantile in a Sentence

  1. the infantile humor that teenage boys are justly famous for

Recent Examples of infantile from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infantile.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of infantile

1696


INFANTILE Defined for English Language Learners

infantile

adjective

Definition of infantile for English Language Learners

  • : annoying and childish : very silly in a way that is not appropriate or polite

  • medical : affecting babies or very young children


INFANTILE Defined for Kids

infantile

adjective in·fan·tile \ ˈin-fən-ˌtīl \

Definition of infantile for Students

: childish 2
  • infantile behavior

Medical Dictionary

infantile

adjective in·fan·tile \ ˈin-fən-ˌtīl , -tᵊl , -ˌtēl , -(ˌ)til \

medical Definition of infantile

1 : of, relating to, or occurring in infants or infancy
  • infantile eczema
2 : suitable to or characteristic of an infant; especially : very immature


Seen and Heard

What made you want to look up infantile? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to remove or wipe out

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!