the.com/advisor

means A person who offers guidance or expert recommendations in a particular field, like finance, academics, or career choices.

from From Old French 'aviser' (to consider, perceive, take counsel), rooted in Latin 'ad-' (to) plus 'visere' (to look at, view, inspect) — itself tied to 'videre', to see. So at bottom, an advisor is someone who 'sees toward' a problem on your behalf — or at least looks like they do. The -or ending is a later English solidifying of the agent noun, turning the act of advising into a job title.