歯向(はむ)かうto strike back at, to bite back, to turn on, to rise against, to oppose, to defy

権力(けんりょく)に歯向(はむ)かうのは時間(じかん)の無駄(むだ)だ。

Defying power is a waste of time. {to strike back at, to bite back, to turn on, to rise against, to oppose, to defy}

野良犬(のらいぬ)が歯向(はむ)かってきたので拳(こぶし)で対抗(たいこう)しました。

A stray dog defied me, so I fought back with my fist. {to strike back at, to bite back, to turn on, to rise against, to oppose, to defy}

主人(しゅじん)：「俺(おれ)に歯向(はむ)かう気(き)か？」召使(めしつか)い：「滅相(めっそう)もないです。」

Master: "Are you planning to defy me?" Servant: "Absolutely not." {to strike back at, to bite back, to turn on, to rise against, to oppose, to defy}

ボスに歯向(はむ)かった社員(しゃいん)が首(くび)になったと聞(き)いて恐怖(きょうふ)で震(ふる)えています。

I heard that the employee who defied the boss got fired, and I'm trembling with fear. {to strike back at, to bite back, to turn on, to rise against, to oppose, to defy}

あの強大(きょうだい)な権力(けんりょく)に歯向(はむ)かおうとするとは…なんて諦(あきら)めの悪(わる)いやつなんだ。

To think someone would dare to defy that formidable power... What a relentless person they are. {to strike back at, to bite back, to turn on, to rise against, to oppose, to defy}