idiosyncratic
Americanadjective
adjective
Other Word Forms
- idiosyncratically adverb
Etymology
Origin of idiosyncratic
First recorded in 1750–60; equivalent to idio- ( def. ) + Greek sýnkrat(os) “closely united” + -ic ( def. ); syn- ( def. ), crater
Explanation
Idiosyncratic means unique to an individual. Albert Einstein famously had lots of idiosyncratic habits. For example, he rarely wore socks, and he talked to his cat. One thing that Einstein definitely wasn't was an idiot. Yet idiosyncratic and idiot are related. Idio is ancient Greek for "one's own." An idiosyncratic person is someone who does things in his own way. And the original meaning of idiot was basically "a regular Joe" — an ordinary person who keeps to himself.
Vocabulary lists containing idiosyncratic
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Into 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.
So, in this instance, because of these unique and idiosyncratic facts, it really is quite possible that somebody’s head is going to roll.
From Slate • Mar. 27, 2026
This state election was idiosyncratic in the way local elections around the world always are.
From The Wall Street Journal • Mar. 12, 2026
Making a purposefully idiosyncratic retelling of a classic tale came with its own challenges.
From Los Angeles Times • Mar. 1, 2026
Greenspan, who turns 100 on March 6, often peppered his responses and his speeches with idiosyncratic insights when he didn’t want to talk about interest rates.
From Barron's • Feb. 27, 2026
Other hobgoblins were the brainchildren of self-proclaimed experts who cooked up idiosyncratic theories of how language ought to behave, usually with a puritanical undercurrent in which people’s natural inclinations must be a form of dissoluteness.
From "The Sense of Style" by Steven Pinker
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.
