mop the floor with someone

Verb

slang

(slang) To trounce or defeat thoroughly or in a humiliating manner.

Japanese Meaning

徹底的に打ち負かす（徹底的に辱めるように敗北させる） / 完敗させる（相手を完全に屈服させる） / 圧倒してやっつける

If the champion shows up, he'll mop the floor with someone who thinks they can beat him.

チャンピオンが出てきたら、彼は自分を倒せると思っている相手を完膚なきまでに打ちのめすだろう。

Sense（1）

(slang) To trounce or defeat thoroughly or in a humiliating manner.

She mopped the floor with her opponent, defeating him 68 to 2.

mops the floor with someone

（ present singular third-person ）

mopping the floor with someone

（ participle present ）

mopped the floor with someone

（ participle past ）

mopped the floor with someone

（ past ）