unforgettable
Americanadjective
adjective
Other Word Forms
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.
Vocabulary lists containing unforgettable
"To Helen Keller" and "Marked/Dusting"
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"One Crazy Summer" by Rita Williams-Garcia, List 5
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In one single unforgettable day—Friday, May 9, 1873—prices on the Vienna Stock Exchange plunged by 45%.
From The Wall Street Journal • May 29, 2026
“From actual chocolate from the factory to beloved toys, we’re creating unforgettable ways for our fans to keep living in these worlds long after the credits roll.”
From Barron's • May 19, 2026
There was testimony from the world’s richest man and his fiercest rivals, corporate secrets, candid emails, unforgettable texts and seminal documents that show what really happened over the past decade.
From The Wall Street Journal • May 18, 2026
The frustratingly unforgettable Kars4kids jingle, which has been worming its way into listeners’ brains for decades, is officially banned from the airways in California.
From Los Angeles Times • May 15, 2026
Apart from being the creamiest icecream in the world, the flavour was unforgettable.
From "Boy: Tales of a Childhood" by Roald Dahl
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
