Meaning

noun eccentricity that is not easily explained

noun a strange attitude or habit

noun something unusual -- perhaps worthy of collecting

originEtymology tree English odd Proto-Indo-European *-teh₂ Proto-Indo-European *-ts Proto-Indo-European *-teh₂ts Latin -itāsder. Old French -itebor. Middle English -ite English -ity English oddity From odd + -ity.

Etymology from Wiktionary, CC BY-SA 3.0