mentor
noun
[ ˈmɛntɔː ]
• an experienced and trusted adviser.
• "he was her friend and mentor until his death"
Similar:
adviser,
guide,
confidant,
confidante,
counsellor,
consultant,
therapist,
master,
spiritual leader,
rav,
rebbe,
guru,
swami,
maharishi,
acharya,
mentor
verb
• advise or train (someone, especially a younger colleague).
• "both trainees were expertly mentored by a site supervisor"
Origin:
mid 18th century: via French and Latin from Greek Mentōr, the name of the adviser of the young Telemachus in Homer's Odyssey .