pretending to be; acting like
熱を出すなんてね大人ぶってるくせにただの風邪だ
You’ve got a fever, huh? You act all grown-up, but it’s just a cold.
— Hoje Eu Quero Voltar Sozinho (2014)
何をいい人ぶってる？
Why are you pretending to be such a good person?
— ベイビー・ブローカー (2022)
あいつ、タフガイぶってるよ。
He's just pretending to be tough.
なぜ彼をぶってる?
Why are you hitting him?
— コーラス (2004)