oddness

Concise Oxford English Dictionary © 2008 Oxford University Press:
odd/ɒd/

▶adjective

• 1 unusual or unexpected; strange.

• 2 (of whole numbers such as 3 and 5) having one left over as a remainder when divided by two.

  ■ denoting a single goal by which one side defeats another in a game where three or more goals are scored.

• 3 [in combination] in the region of: fifty-odd years.

• 4 occasional: we have the odd drink together.

  ■ spare; unoccupied: an odd five minutes.

• 5 detached from a pair or set.

– phrases
odd one out a person or thing differing in some way from the other members of a group or set.

– derivatives
oddish adjective,
oddly adverb,
oddness noun.

– origin ME: from ON odda-, found in combinations such as odda-mathr ‘third or odd man’, from oddi ‘angle’.