Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb rebut

2 senses of rebut

Sense 1
refute, rebut -- (overthrow by argument, evidence, or proof; "The speaker refuted his opponent's arguments")
       => disown, renounce, repudiate -- (cast off; "She renounced her husband"; "The parents repudiated their son")

Sense 2
refute, rebut, controvert -- (prove to be false or incorrect)
       => disprove, confute -- (prove to be false; "The physicist disproved his colleagues' theories")