unforgettable

American  

[uhn-fer-get-uh-buhl] / ˌʌn fərˈgɛt ə bəl /

adjective

1. impossible to forget; indelibly impressed on the memory.

   scenes of unforgettable beauty.

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unforgettable British  

/ ˌʌnfəˈɡɛtəbəl /

adjective

1. impossible to forget; highly memorable

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Other Word Forms

• unforgettableness
  noun
• unforgettably
  adverb

Etymology

Origin of unforgettable

1800–10; un- ¹ + forgettable ( def. )

Explanation

Use the adjective unforgettable to describe things that are so meaningful or important that you could never forget them, like the taste of your grandma's apple pie or your first kiss. Things that linger forever in your memory are unforgettable. You might describe a devastating house fire this way, or your first trip to Paris. While the meaning of unforgettable is easy to decipher once you spot the root word forget, it's a lot harder to spell. Remember the double t and the able ending, and you'll do fine.

Example Sentences

Luiselli’s prose is elegant as ever — she handles difficult themes with grace, and the two main characters prove to be unforgettable.

From Los Angeles Times • May 12, 2026

Rihanna is no stranger to the Met Gala and has made many unforgettable appearances, including last year, when she unveiled her third pregnancy.

From Barron's • May 5, 2026

It promised that fans "can look forward to a smooth, secure, and truly unforgettable tournament".

From BBC • Apr. 24, 2026

With Springsteen taking the microphone, the audience was treated to an unforgettable version of The Doors’ “Light My Fire,” followed by Steve Earle’s rip-roaring take on “Roadhouse Blues.”

From Salon • Apr. 20, 2026

And to an audience stilled with awe, he distributed certified photostatic copies of the obscure regulation on which he had uilt his unforgettable triumph.

From "Catch-22" by Joseph Heller

Related Words

• enduring
• eventful
• extraordinary
• remarkable