Longman Dictionary of Contemporary English homepage

pair

2 verb
     
pair2
1 [intransitive,transitive usually passive] to put people or things into groups of two, or to form groups of two
be paired with somebody
We were each paired with a newcomer to help with training.
2 also pair up [intransitive] if animals pair, they come together in order to breed

pair off

phrasal verb
to come together or bring two people together to have a romantic relationship:
All the others were pairing off and I was left on my own.
pair somebody off with somebody
My aunt was forever pairing me off with unsuitable men.

pair up

phrasal verb
1 British English to become friends and start to have a relationship:
We learned later that he and Tanya had paired up.
2BB to work together to do something or to put two people together to do something:
They first paired up in the screen adaptation of 'Grease'.
pair somebody ↔ up
They have paired up writers and artists, and commissioned linked works.
3 if animals pair up, they come together in order to breed

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