Meaning & Definition
adjective
Unable to be forgotten; having a lasting impression.
The concert was an unforgettable experience that I will cherish forever.
Impressive or extraordinary in such a way that it is likely to be remembered.
Her unforgettable smile lit up the entire room.
Remarkable or noteworthy to the extent that it remains in memory.
They had an unforgettable vacation filled with adventure and laughter.
Etymology
From un- meaning 'not' + forgettable, from forget
Common Phrases and Expressions
an unforgettable experience:
an experience that leaves a lasting impression
unforgettable moments:
memories that are cherished and not easily forgotten
unforgettable love:
a love that is deeply felt and remembered
Slang Meanings
epic
That concert was epic; it was totally unforgettable!
legendary
Her story is legendary; everyone says it's unforgettable.