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

Bringing the world of Harry Potter to the street will create an unforgettable Christmas experience and showcase the West End at its very best. — Georg Szalai, HollywoodReporter, 7 Oct. 2026

Stats show travel retail stores are being mined for discovery and unforgettable memories, with 86 percent of people wanting exclusive beauty offers in the channel, according to L’Oréal. — Jennifer Weil, Footwear News, 6 Oct. 2026

Katie Kirby has created an unforgettable character whose humour, vulnerability, and optimism have captured the hearts of readers around the world. — Max Goldbart, Deadline, 6 Oct. 2026

Bose SoundLink Max Turn any outdoor hangout into an unforgettable celebration with the Bose SoundLink Max Bluetooth Speaker. — Juhi Wadia, PC Magazine, 6 Oct. 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