稚ち気き

noun

childishness; naivete

Refers to a childlike innocence or simplicity, often with a slightly negative or critical nuance of immaturity.

• 彼かれの意い見けんには稚ち気きが感かんじられる。

  His opinion seems childish.

• その発はつ言げんは稚ち気きにあふれている。

  That remark is full of naivete.