expression, i-adjective
bad-tempered; in a bad mood; cranky
Describes someone who is irritable or in a foul mood. Often used with 〜そう or 〜顔.
彼は今朝から機嫌の悪い顔をしている。
He's had a sour look on his face since this morning.
機嫌の悪い上司に
It's scary to talk to a boss who's in a bad mood.