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口も

even one's mouth; one's mouth also

→ 口
phrase Rare #29,420
even one's mouth; one's mouth also も means “also” or “even” and attaches to 口 (mouth). With negative expressions such as 口もきけない, it often means “cannot even speak.”
JA: 緊張して、口も動かなかった。
EN: I was so nervous that I couldn't even move my mouth.

口も態度もデカいチビだ

He's a shorty with a big mouth and a big attitude.

— ワンス・アポン・ア・タイム・イン・ハリウッド (2019)

彼女は私に口もきいてくれない。

She won't even speak to me.

私は気が短いし、口も軽い男だ。

I'm an impatient man, and I can't keep a secret.