Verb controvert has 2 senses
  1. oppose, controvert, contradict - be resistant to; "The board opposed his motion"
    --1 is one way to refute, rebut
    Sample sentence:
    Somebody ----s something
  2. refute, rebut, controvert - prove to be false or incorrect
    --2 is one way to disprove, confute
    Sample sentences:
    Somebody ----s something
    Something ----s something
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