〜ずにはおかない

Pattern
〜ずにはおかない
Level
N3
Meaning
Cannot help but do; will certainly do (strong determination or inevitable outcome).
Attaches to
Verb (nai-form, except 'nai' is replaced by 'zu')
Nuance & register

Strong, formal, emphatic.

Example

彼らは最後まで戦わずにはおかないだろう。 They will surely fight until the end.

Easily confused with

〜ずにはいられない. The latter focuses on the speaker's uncontrollable emotion, while 〜ずにはおかない focuses on the inevitable result or intention.

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