the.com/assistant
A second-in-command whose competence makes the boss look indispensable.
means A person or program that helps someone by doing supportive, often delegated, tasks.
from From Latin assistere, to stand beside, literally to take a stand near someone — help as a matter of physical proximity before it meant paperwork.
Grammar quirkOften modifies a noun: assistant manager, assistant coach.
AI eraNow half the meaning lives in software, not people.
Latin rootSistere means to make stand, to plant firmly.