yes man

/ˈjɛsˌmæn/
noun
  1. A person who always agrees with their boss or superior in order to gain favor, without offering honest opinions.
    • Don't be a yes-man; it's okay to disagree respectfully.
    • The manager only promotes yes-men who never challenge his ideas.
    • The team needs honest feedback, not a bunch of yes-men.
Antonyms
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