もしないで

without even

→ も
phrase Rare #35,633
without even Follows the verb stem and emphasizes that an action was not done at all: “without even doing ...” or “without so much as doing ...”.
JA: 彼は私に相談もしないで、勝手に決めてしまった。
EN: He decided on his own without even consulting me.

おれに聞きもしないで

Without even asking me?

— イル・ポスティーノ (1994)

彼はもの言わず泣きもしないで黙って出ていった

He left quietly without saying a word or shedding a tear.

連絡もしないで

Without even contacting me.

— 動くな、死ね、甦れ! (1990)

彼はその手紙を受け取る読みもしないでそれを燃やした

When he received the letter, he burned it without even reading it.

私は抗議もしないでそのことを大目にみることができない

I can't just let that slide without protesting.