Dictionary.com
Thesaurus.com
Synonyms

idiosyncrasy

American  
[id-ee-uh-sing-kruh-see, -sin-] / ˌɪd i əˈsɪŋ krə si, -ˈsɪn- /

noun

idiosyncrasies plural
  1. a characteristic, habit, mannerism, or the like, that is peculiar to an individual.

    Synonyms:
    quirk, peculiarity
  2. the physical constitution peculiar to an individual.

  3. a peculiarity of the physical or the mental constitution, especially susceptibility toward drugs, food, etc.


idiosyncrasy British  
/ ˌɪdɪəʊˈsɪŋkrəsɪ /

noun

  1. a tendency, type of behaviour, mannerism, etc, of a specific person; quirk

  2. the composite physical or psychological make-up of a specific person

  3. an abnormal reaction of an individual to specific foods, drugs, or other agents

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See eccentricity.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of idiosyncrasy

First recorded in 1595–1605; from Greek idiosynkrāsía, equivalent to idio- idio- + syn- syn- + krâs(is) “a blending” + -ia -y 3

Explanation

If a person has an idiosyncrasy, he or she has a little quirk, or a funny behavior, that makes him or her different. If you only say goodbye in French, never in English, that would be an idiosyncrasy. Idio seems like it means stupid, but really it is Latin for "one's own," as an idiosyncrasy is one's own particular, usually odd, behavior. Putting salt in your hot chocolate or needing the light on to sleep or tapping your head while you think are all idiosyncrasies. A machine such as a DVD player has an idiosyncrasy if you have to do something weird to it to make it work like having to bang it on the back left-hand side to stop it from skipping.

Keep Reading on Vocabulary.com

Vocabulary lists containing idiosyncrasy

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.

Idiosyncrasy and illogic abound, but with no loss of formal integrity.

From Los Angeles Times • Nov. 6, 2015

Idiosyncrasy /idēəˈsiNGkrəsē/ noun: a distinctive or peculiar feature or characteristic of an individual, place, or thing.

From Time • Jul. 27, 2015

Idiosyncrasy of this sort is easy for audiences to miss.

From Los Angeles Times • Jan. 12, 2015

Idiosyncrasy blends with thoroughness here to make a perfect oenophile's companion.

From Time Magazine Archive

Idiosyncrasy, too, may forbid their use; and this is not very rare.

From The Atlantic Monthly, Volume 03, No. 15, January, 1859 by Various

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "idiosyncrasy" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com