odd one out Definition

odd
adj

1. Left over when others are put into groups or pairs; remaining.

Thesaurus: remaining, exceeding, left-over.
2. Not matching.

Example: odd socks
3. Not one of a complete set.
4. math.
Said of a whole number: not exactly divisible by two, eg three is an odd number. Compare even.
5. Said of pages, etc that are numbered consecutively: referring to one with an odd number.

Example: put pictures on the odd pages
odder, oddest
6. Unusual; strange.

Example: an odd face
Thesaurus: unusual, unique, atypical, abnormal, different, bizarre, queer, curious, singular; Antonym: regular.
7. Occasional; not regular; casual.
8. A little more than the specified number.

Example: twenty-odd replies
9. Said of a place: out of the way; standing apart.

noun

1. golf.
A stroke that makes a player's total number of strokes for a particular hole one more than their opponent's.

Derivative: oddish
adj

Derivative: oddly

In an odd way or manner.

Strangely; surprisingly.
Example: Oddly, he refused to stay

Derivative: oddness
noun

Idiom: odd man out (odd one out)

Someone that is set apart or in some way different from, and sometimes unwilling to be like, others forming a particular group.

A person or thing left over when a team or a set, etc has been formed. See also odds.

Etymology: 14c: from Norse oddi point, triangle or odd number.