childish
Americanadjective
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of, like, or befitting a child.
childish games.
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puerile; weak; silly.
childish fears.
adjective
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in the manner of, belonging to, or suitable to a child
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foolish or petty; puerile
childish fears
Synonym Usage
Childish, infantile, childlike refer to characteristics or qualities of childhood. The ending -ish often has unfavorable connotations; childish therefore refers to characteristics that are undesirable and unpleasant: childish selfishness, outbursts of temper. Infantile, originally a general word, now often carries an even stronger idea of disapproval or scorn than does childish: infantile reasoning, behavior. The ending -like has pleasing or neutral connotations; childlike therefore refers to the characteristics that are desirable and admirable: childlike innocence, trust.
Other Word Forms
Etymology
Origin of childish
First recorded before 1000; Middle English childisch, Old English cildisc; child + -ish 1
Explanation
If you act immature or bratty, you're being childish. A childish dinner guest might pout because you didn't make dessert. While the adjective childish is sometimes used to simply mean "like a child," it's more common to use childlike in this way. When your teacher comments that your chattering during class is childish behavior, she means that you're acting as juvenile as a four year old child. This negative implication has been attached to childish since the 15th century. The word comes from the Old English cildisc, "proper to a child."
Vocabulary lists containing childish
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The series’ musical landscape also includes a myriad of folk songs, such as the drunken tavern tune “Alice With Three Fingers” and the childish rhyming couplets of “The Hammer and the Anvil.”
From Los Angeles Times • Jun. 16, 2026
Little by little, through her childish chatter retracing her arrival in Denmark and some research done in South Korea, Randel uncovered a different story from the one in her Danish adoption papers.
From Barron's • Jun. 4, 2026
"Sometimes I feel he is more grown-up and I'm more childish," she says, "though I can be quite bossy."
From BBC • Apr. 25, 2026
In other words, the urge to order a plate of buttered noodles or a perfectly crisp chicken nugget isn’t childish.
From Salon • Apr. 25, 2026
The Ghost nods, as though my problems are reasonable, part of the job, but I feel childish.
From "The Cruel Prince" by Holly Black
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
