idiosyncratic
Americanadjective
adjective
Other Word Forms
Derived Forms
Etymology
Origin of idiosyncratic
First recorded in 1750–60; equivalent to idio- ( def. ) + Greek sýnkrat(os) “closely united” + -ic ( def. ); cf. 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
300 Most Difficult "SAT" Words
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
100 Words to Make You Sound Smart
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Into the Wild
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
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.
"Pakistani leaders are conducting shuttle diplomacy throughout the Middle East. The question is whether it is transitory and merely the product of the US president's idiosyncratic preferences."
From BBC • May 7, 2026
There are idiosyncratic reasons for each of the moves.
From Barron's • May 1, 2026
There are idiosyncratic reasons for the modest wage growth in certain immigrant-heavy sectors, such high interest rates weighing on home construction.
From The Wall Street Journal • Apr. 22, 2026
In its idiosyncratic way, “This Is a Gardening Show” ranks among them.
From Los Angeles Times • Apr. 22, 2026
Nevertheless, it remains an open question how wide and lasting the effects of idiosyncratic individuals on history really are.
From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond
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.
