Synonyms and related words :
acolyte, agent, aid, aide, aide-de-camp, aider, assistant, attendant, auxiliary, best man, coadjutant, coadjutor, coadjutress, coadjutrix, deputy, executive officer, help, helper, helpmate, helpmeet, lieutenant, paranymph, paraprofessional, second, servant, sideman, supporting actor, supporting instrumentalist,