Definition
a quirky habit unique to a person
In a sentence
“His idiosyncrasy is humming when he reads.”
Similar words
- quirk
- peculiarity
Related vocabulary
Why this word matters: idiosyncrasy appears in academic reading at the 8th-grade level and is exactly the type of word that shows up on the CPS HSAT Reading section. Practice it in context with our spaced-repetition system at vocabulary.