a system where experienced people advise and help others, especially at work: The university says its mentoring programme has increased the number of working class students nishing their degree.
the feeling that you cannot trust someone, especially because you think they may treat you unfairly or dishonestly: People here have developed a deep mistrust of the police
advice or criticism about how well someone does their job and what needs improvement: It is important to give employees regular feedback on their performance.