Find Antonyms
schoolboyish Antonyms
Opposite of schoolboyish
Pinning down the opposite of schoolboyish requires matching its exact sense, so the antonyms and opposite words below are paired with a clear adjective definition and ranked by contrast strength.
• adjective (Context 1)
Characteristic of or resembling a schoolboy, especially in being immature, naive, or playfully mischievous.
Usage Example
"The veteran actor still retained a mature enthusiasm whenever he stepped onto a new film set."
Strongest
mature
adult
grown-up
Strong
sophisticated
worldly
seasoned
Similar words to schoolboyish
Words similar to schoolboyish shift depending on context. Common synonyms include:
boyish
juvenile
puerile
immature
childish
adolescent
youthful
callow
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Schoolboyish. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/schoolboyish