やんちゃする

やんちゃする
verb (suru)
to act up, to be naughty, to be wild
1. to be naughty, to act up, to misbehave
Describes childish misbehavior or playful troublemaking, typically by children.
うちの()はよくやんちゃする。
My kid is always acting up.
(おとこ)()はやんちゃするものだよ。
Boys will be boys.
子供(こども)がやんちゃして、(かべ)落書(らくが)きをした。
The kids got into mischief and scribbled on the wall.
2. to be wild, to raise hell, to get into trouble
When used about teenagers or young adults, describes rebellious or delinquent behavior, often looking back on it nostalgically.
(わか)(ころ)はやんちゃしてたな。
I was pretty wild when I was young.
学生(がくせい)時代(じだい)にやんちゃした仲間(なかま)(ひさ)しぶりに()った。
I met up with friends I used to raise hell with back in school.
ちょっとやんちゃしすぎて、先生(せんせい)(おこ)られた(おも)()がある。
I have memories of going too wild and getting scolded by the teacher.

The noun form やんちゃ can also be used as a な-adjective: やんちゃな() (a naughty child).

When adults describe their own past やんちゃ, it often carries a nostalgic or self-deprecating tone, sometimes even a hint of pride in having been rebellious.

COMMON COLLOCATIONS:

  • やんちゃな(): a naughty/rambunctious kid
  • やんちゃ(ざか)り: at the peak of mischievous age
  • (わか)(ころ)のやんちゃ: youthful wildness