The meaning of IDIOSYNCRASY is a peculiarity of constitution, behavior, or temperament : an individualizing characteristic or quality; broadly : eccentricity. How to use idiosyncrasy in a sentence.

IDIOSYNCRATIC definition: 1. having strange or unusual habits, ways of behaving, or features: 2. having strange or unusual…. Learn more.

IDIOSYNCRATIC definition: pertaining to the nature of idiosyncrasy, or something peculiar to an individual. See examples of idiosyncratic used in a sentence.

Definition of idiosyncratic adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

She has an idiosyncratic [= unusual] singing voice. His taste in music was very idiosyncratic.

Dec 27, 2025 · Adjective [edit] idiosyncratic (comparative more idiosyncratic, superlative most idiosyncratic) Peculiar to a specific individual; eccentric. quotations

idiosyncratic, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary

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.

If you describe someone's actions or characteristics as idiosyncratic, you mean that they are rather unusual. ...a highly idiosyncratic personality. ...his erratic typing and idiosyncratic spelling.

pl. id·i·o·syn·cra·sies 1. A structural or behavioral characteristic peculiar to an individual or group. 2. A physiological or temperamental peculiarity....