detractor

A detractor is someone who puts you down. When you're proposing ideas at work, your detractor is the person who finds fault with everything you say.

Use the noun detractor for someone who is always critical. You might describe your brother as a detractor of the government if he complains incessantly about taxes, voting, the President, and all the members of Congress. If a person takes a dislike to you in particular, he is your own personal detractor. The origin of detractor goes back to the Latin word detrahere, "take down, pull down, or disparage."

Definitions of detractor
  1. noun
    one who disparages or belittles the worth of something
    synonyms: depreciator, disparager, knocker
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    types:
    backbiter, defamer, libeler, maligner, slanderer, traducer, vilifier
    one who attacks the reputation of another by slander or libel
    hatemonger
    one who arouses hatred for others
    muckraker, mudslinger
    one who spreads real or alleged scandal about another (usually for political advantage)
    type of:
    cynic, faultfinder
    someone who is critical of the motives of others
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