Synonyms for assistant

aide, deputy, henchman, friend, follower, adherent, auxiliary, lieutenant, associate, companion, colleague, partner, helper, acolyte, representative, second in command, apprentice, co-worker, fellow-worker, secretary, supporter, appointee, abettor, ancillary, standby, helping hand, patron, backer, bodyguard, aide-de-camp, ally, accessory, clerk, adjunct, collaborator, confederate, subaltern, mate, helpmate, adjutant, subordinate, coadjutor, attendant, accomplice, second, right hand, right-hand man, man Friday, gal Friday, underling, lackey, flunky*, sidekick*, yes-man*, stooge*, gofer*.

Antonyms supervisor, rival, antagonist.