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

Accommodation for 12 guests is complemented by a cinema, gym and an extensive watersports inventory, making Slipstream an excellent choice for guests who want the eclipse to become one unforgettable chapter in a chic Mediterranean charter. — Dea Jusufi, Forbes.com, 25 July 2026

An overdue veteran with an unforgettable single sequence in a prestige juggernaut is, on paper, precisely what the Academy membership could find irresistible. — Clayton Davis, Variety, 24 July 2026

Football has taught me many life lessons and given me unforgettable memories. — Ryan Gaydos, FOXNews.com, 23 July 2026

The veteran English actor is stunning audiences with her unforgettable Circe in Christopher Nolan’s epic, a showcase for her fearlessness and range. — Glenn Whipp, Los Angeles Times, 23 July 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