idiosyncrasy
noun
id·i·o·syn·cra·sy
ˌi-dē-ə-ˈsiŋ-krə-sē 
plural idiosyncrasies
1
a
: a peculiarity of constitution or temperament : an individualizing characteristic or quality
b
: individual hypersensitiveness (as to a drug or food)
2
: characteristic peculiarity (as of temperament)
broadly
: eccentricity
Examples of idiosyncrasy in a Sentence
Her habit of using “like” in every sentence was just one of her idiosyncrasies.
The current system has a few idiosyncrasies.
Recent Examples on the Web
Victor then flips back to an earlier chapter, before their graduation, to a time when Agnes seems less calcified in her idiosyncrasies.
—
Katie Walsh, Los Angeles Times, 27 June 2025
Wimbledon is widely considered one of the most prestigious of all tennis Grand Slams, known for its storied grounds, rich traditions, and unique idiosyncrasies.
—Jazz Tangcay, Variety, 24 June 2025
And Petrova and Trim, like many others, began to learn the sometimes cruel idiosyncrasies of the U.S. immigration system.
—Lauren Villagran, USA Today, 12 May 2025
But at home, my mom, creative and quirky in her own right, embraced my idiosyncrasies.
—Ava Xiao-Lin Rigelhaupt, HollywoodReporter, 30 Apr. 2025
See All Example Sentences for idiosyncrasy
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Katie Walsh, Los Angeles Times, 27 June 2025
Wimbledon is widely considered one of the most prestigious of all tennis Grand Slams, known for its storied grounds, rich traditions, and unique idiosyncrasies.
—Jazz Tangcay, Variety, 24 June 2025
And Petrova and Trim, like many others, began to learn the sometimes cruel idiosyncrasies of the U.S. immigration system.
—Lauren Villagran, USA Today, 12 May 2025
But at home, my mom, creative and quirky in her own right, embraced my idiosyncrasies.
—Ava Xiao-Lin Rigelhaupt, HollywoodReporter, 30 Apr. 2025
See All Example Sentences for idiosyncrasy
Cite this Entry
“Idiosyncrasy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/idiosyncrasy. Accessed 11 Jul. 2025.
Copy CitationMedical Definition
idiosyncrasy
noun
id·io·syn·cra·sy
ˌid-ē-ə-ˈsiŋ-krə-sē
plural idiosyncrasies
1
: a peculiarity of physical or mental constitution or temperament
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
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