悪わるガキ

noun

brat; naughty kid

Colloquial, mildly derogatory term for a mischievous or ill-behaved child. Often used with a mix of exasperation and affection.

• 近きん所じょの悪わるガキがまた塀へいに落らく書がきした。

  The neighborhood brat scribbled on the wall again.

• あの悪わるガキどもをなんとかしてくれ。

  Do something about those little rascals.