欠かさず

without fail, without missing/skipping

→ 欠かす
verb Rare #44,458
without fail, without missing/skipping Used to say that something is done regularly, without missing an occasion.
JA: 毎朝欠かさず運動します。
EN: I exercise every morning without fail.
Conjugation of 欠かす
Necessitative
欠かさず

彼は毎週欠かさず母親に便りをする。

He writes to his mother every week without fail.

彼は毎日欠かさず新聞を読む。

He reads the newspaper every day without fail.

毎週欠かさず見てます

I watch it every week without fail.

— フォーリング・ダウン (1993)

トムは一日も欠かさずここに来ている。

Tom has been coming here every single day.