idiosyncrasy
Say it: id-ee-oh-SIN-kruh-see /ˌɪdiəˈsɪŋkrəsi/ · noun
What “idiosyncrasy” means
An unusual habit that's particular to someone or something.
More precisely: A peculiar habit or way of behaving that is particular to a person or thing.
When to use it
In affectionate or neutral, fairly formal conversation, when describing a person's distinctive little habits or an object's peculiar behaviour.
Similar words
quirk, peculiarity, eccentricity
Where it comes from
From Greek idiosynkrasia, "peculiar temperament."
Quick check
Your friend always turns every cup handle to face the window before drinking tea. What would you call this habit?
a tradition or an idiosyncrasy?
Show the answer
an idiosyncrasy
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