unforgettable

adjective

un·​for·​get·​ta·​ble ˌən-fər-ˈge-tə-bəl 

: incapable of being forgotten : memorable

an unforgettable experience

unforgettably

ˌən-fər-ˈge-tə-blē 

adverb

Synonyms of unforgettable

• memorable

Examples of unforgettable in a Sentence

an unforgettable evening of dining and dancing

Recent Examples on the Web

Especially on afternoons like Sunday, when the Minnesota Vikings turn a clunker of a performance into an unforgettable 39-22 comeback against the Green Bay Packers, the momentum shifts feel communal. — Alec Lewis, New York Times, 14 Sep. 2026

Peters cited an unforgettable moment from the variety series, where Mackie fashioned Burnett a dress out of curtains and included the curtain rod. — Angela Andaloro, PEOPLE, 14 Sep. 2026

Ahead, look back at 12 of Bob Mackie’s most unforgettable celebrity fashion moments throughout the years. — Amanda Le, InStyle, 14 Sep. 2026

What could have easily ruined their experience instead became an unforgettable highlight of the trip. — Condé Nast, Condé Nast Traveler, 11 Sep. 2026

Word History

First Known Use

1806, in the meaning defined above

Rhymes for unforgettable

• forgettable
• regrettable
• wettable

Kids Definition

unforgettable

adjective

un·​for·​get·​ta·​ble ˌən-fər-ˈget-ə-bəl 

: not to be forgotten : lasting in memory

unforgettably

-blē 

adverb