N1170/186

ずにはおかない

V-ない + ずにはおかないAdj-i + ずにはおかないNoun + ずにはおかない

Meanings

  • Will definitely
  • Will certainly
  • Bound to
  • Not fail to

About this pattern

Explanation

ずにはおかない expresses a strong inevitability or compulsion: once a situation arises or a statement is made, there is no choice but for a certain action or reaction to happen. It conveys conviction and force, often used to describe people’s responses, outcomes, or conditions that are almost guaranteed. This structure is common in formal or emphatic speech, and can carry a somewhat judgmental or assertive tone when used about others' behavior.

Learn in context

Example sentences

彼は約束を破ると、友達は怒らずにはおかない。

If he breaks a promise, his friends will not fail to be angry (they will certainly be angry).

この説明を聞けば、誰もが納得せずにはおかないだろう。

Once you hear this explanation, no one will fail to be convinced.

子どもは母の一言を聞けば、素直に従わずにはおかない。

If the child hears a word from mother, they will not fail to obey obediently.