something or other Definition

other
adj

1. Remaining from a group of two or more when one or some have been specified already.

Example: Now close the other eye
Thesaurus: some, a few, a number, a handful, not many, two or three, many.
2. Different from the one or ones already mentioned, understood or implied.

Example: other people
Thesaurus: alternative, different, separate.
3. Additional; further.

Example: need to buy one other thing
Thesaurus: added, further, another, extra, spare; new, fresh.
4. Far or opposite.

Example: the other side of the world

pronoun

1a. Another person or thing;
1b. Other people or things.

Form: others
2. Further or additional ones.

Example: I'd like to see some others
Form: others
3. The remaining people or things of a group.

Example: Go with the others
Form: the others (usually)

adverb

1. Otherwise; differently.

Example: couldn't do other than hurry home
Form: other than (usually)

noun

1. Someone or something considered separate, different, additional to, apart from, etc the rest.

Example: introduced him as his significant other
2. literary theory.
In Lacanian terms: someone who does not belong to a specified social, cultural, racial, etc group and who is therefore excluded from participation in the predominant group's interpretation of eg literary texts.
Form: Other (often)

Derivative: otherness
noun

The fact or condition of being other or different.

Idiom: every other

Each alternate; every second.
Example: see him every other week

Idiom: in other words

This means.
Example: ‘I've really no time.' ‘In other words you can't do it?'

Idiom: other than ...

Except ...; apart from ....
Example: Other than that, there's no news

Different from ....
Example: do something other than watch TV

Idiom: other things being equal

Circumstances or conditions being unchanged.

Idiom: someone or other (something or other, somewhere etc or other)

Some unspecified person, thing or place, etc.
Example: It's here somewhere or other

Idiom: the other day (the other week etc)

A few days or weeks etc ago.

Idiom: the other man (the other woman)

The lover of a woman or man who is already married or in a relationship.

Etymology: Anglo-Saxon.