Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

idiosyncrasy

play
noun id·i·o·syn·cra·sy \ˌi-dē-ə-ˈsiŋ-krə-sē\

Simple Definition of idiosyncrasy

  • : an unusual way in which a particular person behaves or thinks

  • : an unusual part or feature of something

Full Definition of idiosyncrasy

plural id·i·o·syn·cra·sies

  1. 1 a :  a peculiarity of constitution or temperament :  an individualizing characteristic or quality b :  individual hypersensitiveness (as to a drug or food)

  2. 2 :  characteristic peculiarity (as of temperament); broadly :  eccentricity

id·i·o·syn·crat·ic play \ˌi-dē-ō-(ˌ)sin-ˈkra-tik\ adjective
id·i·o·syn·crat·i·cal·ly play \-ˈkra-ti-k(ə-)lē\ adverb

Examples of idiosyncrasy

  1. Her habit of using like in every sentence was just one of her idiosyncrasies.

  2. The current system has a few idiosyncracies.



Origin of idiosyncrasy

Greek idiosynkrasia, from idio- + synkerannynai to blend, from syn- + kerannynai to mingle, mix — more at crater


First Known Use: 1604


Medical Dictionary

idiosyncrasy

play
noun id·io·syn·cra·sy \ˌid-ē-ə-ˈsiŋ-krə-sē\

Medical Definition of idiosyncrasy

plural id·io·syn·cra·sies

  1. 1:  a peculiarity of physical or mental constitution or temperament

  2. 2:  individual hypersensitiveness (as to a drug or food) <anemia accompanying the use of a sulfa drug is usually considered to be due to idiosyncrasy>





Seen and Heard

What made you want to look up idiosyncrasy? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 12, 2016

of, relating to, or suggestive of marble

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

196.5 pounds 100 pounds 2.2 pounds 16.96 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ