also: こまっしゃくれる · こまっちゃくれる · こまちゃくれる
ichidan verb, intransitive verb
be cheeky; be sassy; be precocious
Describes a child who acts overly mature, talks back, or behaves in a smart-alecky way. Often carries a negative or exasperated tone.
あの子はまだ5歳なのに、こましゃくれた口をきく。
That kid is only five, but he talks back cheekily.
こましゃくれたガキだな。
What a sassy little brat.