assistant -
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"
attendant,
attender,
tender a person who is present and participates in a meeting; "he was a regular attender at department meetings"; "the gathering satisfied both organizers and attendees"
bat boy (baseball) a boy who takes care of bats and other baseball equipment
flower girl a young girl who carries flowers in a (wedding) procession
girl friday a female assistant who has a range of duties
enforcer,
hatchet man one whose job it is to execute unpleasant tasks for a superior
cat's-paw,
pawn,
instrument a hitch in the middle of rope that has two eyes into which tackle can be hooked
birthing coach,
doula,
labor coach,
monitrice an assistant (often the father of the soon-to-be-born child) who provides support for a woman in labor by encouraging her to use techniques learned in childbirth-preparation classes
underboss an assistant or second-in-command to a chief (especially in a crime syndicate)
An assistant is a person (or by extension a device) that helps another person accomplish his goals. Assistants may be provided by one's employer to assist with work-related tasks. The wealthy or those with freelance businesses may hire personal assistants.
OmegaWiki Dictionary
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assistant A person or persons who provide assistance with some task.
assistant Someone who is subordinate to another who assists the latter.