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English definition of “quirk”

quirk

noun [C]  /kwɜrk/ us  
an unusual habit or type of behavior, or something that is strange and unexpected: a personality quirk It’s just one of the quirks of living there.
quirky
adjective [-er/-est only]  /ˈkwɜr·ki/ us  
a quirky, offbeat sense of humor
(Definition of quirk from the Cambridge Academic Content Dictionary © Cambridge University Press)
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