N1necessityobligationN1 grammar
ずにはすまない (zuniwa sumanai) - Cannot Avoid Doing
Verb-ない + ずにはすまない
Quick answer
Verb-ない + ずにはすまない means "Cannot avoid doing ~". Mastering this N1 structure builds fluency for reading and listening. Full examples and exercises are below.
Meaning
Cannot avoid doing ~
Explanation
This grammar pattern indicates an inevitable necessity or obligation to do something. It suggests that, due to circumstances or duties, avoiding the action is not an option.
Examples
Practice this grammar
Verb-ない + ずにはすまない
Which sentence correctly uses "ずにはすまない (zuniwa sumanai) - Cannot Avoid Doing"?
Vocabulary from these examples
Last updated Jul 4, 2026