assistant, helper, help, supporter

a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"

• coadjutor — an assistant to a Bishop
• accomplice, confederate — a person who joins with another in carrying out some plan (especially an unethical or illegal plan)
• acolyte — one who assists a minister in a liturgical service
• aide, auxiliary — someone who acts as assistant
• attendant, attender, tender — someone who waits on or tends to or attends to the needs of another
• dental assistant — an assistant to a dentist
• deputy, lieutenant — an assistant with power to act when his superior is absent
• dresser, actor's assistant — a wardrobe assistant for an actor
• event planner — someone who plans social events as a profession (usually for government or corporate officials)
• facilitator — someone who makes progress easier
• girl Friday — a female assistant who has a range of duties
• hatchet man, enforcer — one whose job it is to execute unpleasant tasks for a superior
• instrument, pawn, cat's-paw — a person used by another to gain an end
• labor coach, monitrice — assistant (often the father) who provides support for a woman in labor by encouraging her to use techniques learned in childbirth-preparation classes
• mannequin, manikin, mannikin, manakin, fashion model, model — a woman who wears clothes to display fashions
• model, poser — a person who poses for a photographer or painter or sculptor
• paraprofessional — a trained worker who is not a member of a profession but who assists a professional
• powder monkey — someone who carries explosives (as from the magazine to the guns on board a warship)
• prompter, theater prompter — someone who assists a performer by providing the next words of a forgotten speech
• right-hand man, chief assistant, man Friday — the most helpful assistant
• secretary, secretarial assistant — an assistant who handles correspondence and clerical work for a boss or an organization
• sidesman — (Church of England) an assistant to the churchwarden; collects offerings of money in the church
• water boy, waterer — an assistant who supplies drinking water
• whipper-in — huntsman's assistant in managing the hounds

• worker — a person who works at a specific occupation