oddity

Etymology

odd + -ity

noun

1. (countable) An odd or strange thing or opinion.
   An Avonside 0-4-4T with outside cylinders, bought by the S.M.A. in 1882 and scrapped in 1892 as a dismal failure, was one of the motive power oddities (some of them mortgaged). 1961 October, “Talking of Trains: Last of the M.S.W.J.R.”, in Trains Illustrated, page 586
2. (countable) A strange person; an oddball.
3. (uncountable) Strangeness.
   The thing was unprecedented in his experience, and probably he wondered in his equine way at the eccentricities of the human race, and questioned whether oddity might not be merging into insanity in his master’s case. 1869, E[llen] L. B[iscoe Hollis], “Mr. Wilmington’s Opposition”, in Katharine’s Experience, Boston, Mass.: […] Warren and Blakeslee,[…], page 311