bedfellow

someone associated with another to give assistance or moral support <a child-welfare cause that has made bedfellows of activists who are normally on opposite ends of the political spectrum> Synonyms abettor (also abetter), backer, ally, confederate, fellow traveler, supporter, sympathizerRelated Words empathizer, well-wisher; accessory (also accessary), accomplice, coalitionist, collaborationist, collaborator; adjunct, assistant, coadjutor, helper; associate, cohort, colleague, fellow, partner; buddy, chum, companion, comrade, confidant, crony, familiar, friend, intimate, mate, palNear Antonyms belittler, detractor; adversary, enemy, foe, opponent