mentor

/ˈmɛntɔr/
noun
  1. An experienced and trusted person who gives advice and guidance to someone with less experience, especially in a job or career.
    • She has been a mentor to many young scientists over the years.
    • A good mentor listens carefully and offers honest feedback.
    • My mentor at the company helped me learn the ropes quickly.
Antonyms
verb
  1. To act as a mentor to someone; to guide and advise someone with less experience.
    • The program mentors students from underprivileged backgrounds.
    • I hope to mentor a new employee next semester.
    • He mentors several junior developers in his free time.