Find Antonyms

childish Antonyms

Opposite of childish

Because the opposite of childish shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Silly, immature, and lacking adult restraint or judgment.

Usage Example

"Refusing to speak to your colleague over a minor disagreement is a rather mature reaction."

Strongest
mature
grown-up
adult
Strong
sensible
level-headed
sophisticated

• adjective (Context 2)

Of, relating to, or characteristic of a child.

Usage Example

"The letter was written in a large, uneven, adult scrawl."

Strongest
adult
grown-up

Similar words to childish

Words similar to childish shift depending on context. Common synonyms include:

immature
juvenile
infantile
puerile
babyish
youthful
childlike
petty
See all synonyms of childish

• Nearby Words

child
childbearing
childhood
childish
childishly
childishness
childless

Cite this Entry

Wordmom. (2026). Antonyms for Childish. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/childish
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