petulantly
01
むっつりと, 子供っぽく
in a way that shows sudden irritation or childish annoyance, especially over something minor
例
He petulantly crossed his arms and looked away.
むっつりと、彼は腕を組んでよそを見た。
" That 's not fair! " she shouted petulantly.
「それは公平じゃない！」と彼女はむしゃくしゃして叫んだ。
