Englishpartner
noun
1 two former business partners:
colleague, associate, co-worker, fellow worker, co-partner, collaborator, ally, comrade, companion, teammate;
French confrère;
British, informal oppo;
Australian, New Zealand, informal offsider;
archaic compeer;
rare consociate.
2 his partner in crime:
accomplice, confederate, accessory, collaborator, fellow conspirator, right hand, right-hand man/woman, helper, abetter;
North American cohort;
informal sidekick.
3 are you worried about your relationship with your partner?:
spouse, husband, wife, mate, consort;
lover, girlfriend, boyfriend, fiancé, fiancée, significant other, live-in lover, cohabitee, common-law husband, common-law wife, man, woman;
Italian inamorato, inamorata;
informal other half, better half;
archaic helpmate, helpmeet;
informal , dated intended.
partner (1) Oxford Dictionary of English