'mentor' originates from Greek, specifically the word 'Mentor,' a character in Homer's 'Odyssey,' where 'Mentor' was a wise and trusted advisor.

'Mentor' was adopted into Latin as 'Mentor' and eventually became the modern English word 'mentor' through Middle English.

Initially, it meant 'a wise and trusted advisor,' but over time it evolved into its current meaning of 'someone who guides or advises.'