assistant (someone who helps someone else in their job): My personal assistant will help you deal with the issue.
helper (someone who helps with a job or task): I need enough helpers to move all these kitchen appliances.
aide (an assistant to someone who has an important job): Anthony was appointed as a presidential aide.
deputy (a person appointed to undertake the duties of a manager or boss when they are away): She is acting as deputy till the boss returns.
auxiliary (a person who is employed to help more senior or permanent workers in their work): Anna works as a nursing auxiliary in a local hospital.
right-hand man (a trusted and important assistant): He is the governor’s right-hand man.
sidekick informal (a person who helps with someone who is more important or more intelligent): Everywhere the detective goes, he takes his sidekick with him.
