A specific quirky aspect of a person or thing(noun)
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Use "quirkiness" in a sentence
"Sasha's 'quirkiness' is what makes her so interesting and different from most of the cookie-cutter accidental sleuths out there now."
"A perception of quirkiness is not what you want in a VP candidate - ask George McGovern."
"There’s a certain quirkiness inherent in the call-and-response between pre-rap quasi-singer Fred Schneider and the harmonious pair of Kate Pierson and Cindy Wilson that permeates the B-52s sound."