“Infantile” in Japanese
Short answer
Infantile in Japanese is “幼稚” (youchi). Full meaning: infancy; childish, infantile, immature, primitive.
Other ways to say “Infantile” in Japanese
子供じみた
kodomojimita childish, childlike, immature, infantile
子供っぽい
kodomoppoi childish, childlike, immature, infantile, puerile
ようち
youchi infancy; childish, infantile, immature, primitive
ヨーチ
youchi infancy; childish, infantile, immature, primitive
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