Oddity (11)
'oddity' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for strangeness that I've seen before include "Odd quality" , "Quark flavour; odd state" , "One of the six quark flavours" , "Oddity" .)
'oddity' is the definition.
(thesaurus)
This is the entire clue.
(Another definition for weirdness that I've seen is " Peculiarity".)