もせずに

without even

→ も
phrase Rare #20,447
without even Used after a noun or verb stem to emphasize that someone did not do something before or while doing something else. It often translates as “without even doing ...” or “without so much as ...”.
JA: 彼は何も言わずに、もせずに立ち去った。
EN: He left without even saying anything.

相談もせずにおいタイラー

You didn't even consult me—hey, Tyler!

— ファイト・クラブ (1999)

バカ言え喧嘩もせずにどうやってを知る

Don't be ridiculous. How can you know yourself without ever getting into a fight?

— ファイト・クラブ (1999)

トム挨拶もせずに帰ったなんて信じれない

I can't believe Tom left without even saying goodbye.

トムノックもせずに部屋に入ってきた

Tom entered the room without knocking.

電話もせずにごめんなさい

Sorry for not even calling.

— ア・フュー・グッドメン (1992)

彼女は挨拶もせずに立ち去った

She left without even saying goodbye.