immemorial
Americanadjective
adjective
Other Word Forms
Etymology
Origin of immemorial
From the Medieval Latin word immemoriālis, dating back to 1595–1605. See im- 2, memorial
Explanation
Anything immemorial is very, very old. You're most likely to hear this word in the phrase "time immemorial," a common way to say "so long ago that no one remembers it." The French immémorial means "old beyond memory," from a Latin root. Don't confuse this adjective with immemorable, which is sometimes used instead, but which literally means "not worth remembering." Immemorial is a perfect way to describe ancient things, including stories, customs, religions, and even time itself.
Vocabulary lists containing immemorial
This Week in Words: March 30–April 5, 2019
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Ancient Wisdom: Synonyms for "Old"
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"The Witch Boy" by Molly Knox Ostertag
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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.
"Uganda has been ready for a civilian leader since time immemorial," he insists, adding that according to Uganda's constitution, the military must be subordinate to the civilian authority.
From BBC • Jan. 10, 2026
The future promised by AI is exciting and lucrative, but there is something to be said for investors flocking to an asset that has been treasured since time immemorial.
From Barron's • Dec. 23, 2025
But there’s something just so effortless about her Majorca-primed house singles like “Maria,” which feel ready to slip into magic hour rooftop DJ sets for time immemorial.
From Los Angeles Times • Oct. 5, 2025
One would think the viruses and bacteria that have tormented humanity since time immemorial would never find a friend in the species — human beings — they so routinely sicken and kill.
From Salon • Feb. 5, 2025
They seem to watch my approach with an immemorial regard, as stoic as the goddess said to dwell among them.
From "Beasts of Prey" by Ayana Gray
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.
