significant event
Definitions
A noteworthy occurrence that has a meaningful impact or lasting influence on a situation or history.
An incident of considerable importance or consequence that warrants attention.
Examples
The signing of the peace treaty was a significant event that changed the course of history.
Graduating from university is a significant event in the life of every student.
Synonyms
momentous occasion landmark event pivotal moment historic milestone consequential occurrence
Antonyms
trivial incident insignificant occurrence non-event minor detail inconsequential happening