“Childish” in Japanese
Short answer
Childish in Japanese is “幼い” (osanai). Full meaning: very young, little; childish, immature.
Other ways to say “Childish” in Japanese
稚拙
chisetsu unskillful, childish, immature, naive, artless, clumsy, crude
おぼこい
obokoi childish, immature, green
子供じみた
kodomojimita childish, childlike, immature, infantile
子供っぽい
kodomoppoi childish, childlike, immature, infantile, puerile
子どもらしい
kodomorashii childish, child-like, innocent, naive
幼稚
youchi infancy; childish, infantile, immature, primitive
大人げない
otonagenai immature, childish
稚ない
osanai very young, little; childish, immature
幼ない
osanai very young, little; childish, immature
おさない
osanai very young, little; childish, immature
幼き
osanaki very young; childish, immature
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