野や生せい児じ

noun

feral child; wild child

Refers to a child raised in isolation from human contact, often in the wild, or metaphorically to a child with untamed, free-spirited behavior.

• その小しょう説せつは、森もりで育そだった野や生せい児じの物もの語がたりだ。

  That novel is the story of a feral child raised in the forest.

• 彼かれは都と会かい育そだちだが、まるで野や生せい児じのように自じ由ゆう奔ほん放ぽうだ。

  He grew up in the city, but he's as free and uninhibited as a wild child.