husband or wife; spouse.

one member of a pair of mated animals.

one of a pair

I can't find the mate to this glove.

a counterpart.

an associate; fellow worker; comrade; partner (often used in combination)

classmate; roommate.

friend; buddy; pal (often used as an informal term of address)

Let me give you a hand with that, mate.

Nautical .

first mate.

any of a number of officers of varying degrees of rank subordinate to the master of a merchant ship.

an assistant to a warrant officer or other functionary on a ship.

an aide or helper, as to an artisan; factotum.

a gear, rack, or worm engaging with another gear or worm.

Archaic . an equal in reputation; peer; match.

to join as a mate or as mates.

to bring (animals) together for breeding purposes.

to match or marry.

to join, fit, or associate suitably

to mate thought with daring action.

to connect or link

a telephone system mated to a computerized information service.

to treat as comparable.

to associate as a mate or as mates.

(of animals) to copulate.

(of animals) to pair for the purpose of breeding.

to marry.

(of a gear, rack, or worm) to engage with another gear or worm; mesh.

Archaic . to consort; keep company.

verb

abstain , uncouple

noun

acquaintance , alter ego , analog , assistant , associate , bedmate , bride , buddy * , chum * , classmate , cohort , colleague , companion , compeer , complement , comrade , concomitant , consort , coordinate , counterpart , coworker , crony , double , duplicate , familiar , friend , groom , helper , helpmate , intimate , match , pal * , peer , playmate , reciprocal , roommate , schoolmate , sidekick * , spouse , twin , fellow , partner , chum , amigo , brother , confidant , confidante , pal

verb

cohabit , copulate , couple , crossbreed , generate , join , land * , match , merge , pair , procreate , serve , tie , tie the knot * , wed , yoke , espouse , bed , have , sleep with , associate , breed , buddy , chum , cohort , companion , compete with , comrade , confidant , consort , cope with , equal , fellow , friend , husband , marry , oppose , pal , partner , peer , sidekick , spouse , twin , vie with , wife