noun
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the ninth letter in the Greek alphabet (Ι, ι), a vowel or semivowel, transliterated as i or j
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(usually used with a negative) a very small amount; jot (esp in the phrase not one or an iota )
Etymology
Origin of iota
1600–10; < Latin iōta < Greek iôta < Semitic; compare Hebrew yōdh yod
Explanation
If you don't care one iota about something, it means you don’t care about it even one little bit. An iota is something very small. An iota is the smallest letter of the Greek alphabet. The expression "not one iota" comes from the Bible (Matthew 5:18): "For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished."
Vocabulary lists containing iota
To Kill a Mockingbird
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"To Kill a Mockingbird" by Harper Lee, Chapters 20–25
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Words You Need to See in the Wild
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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.
“I have not felt that one iota since becoming a parent,” Moore said, adding she has formed “meaningful relationships” with other parents.
From Los Angeles Times • May 19, 2026
Not an iota of care for Mathew Shurka, “an amicus who received conversion therapy as a child,” who is a living example of the unbearable price paid for framing talk therapy as nothing but speech.
From Slate • Apr. 3, 2026
And as corny as that may seem, I implore you: If you have even one microscopic iota of curiosity, see this film.
From Salon • Mar. 21, 2026
“What we do is so blood, sweat and tears — every iota of your being at times — and if you aren’t in it, it’s really hard to understand for certain people,” Bayne says.
From Los Angeles Times • Sep. 10, 2024
She was growing a little stout, but it did net seem to detract an iota from the grace of every step, pose, gesture.
From "The Awakening" by Kate Chopin
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.
