Refute
Part of speech: verb
Definition: To prove (something) to be false or incorrect. To deny the truth or correctness of (something).
Example sentence: There's so much denial in gymnastics. It's a beautiful sport but the other part is numbing. You become machinelike. They'll refute this, but I've been around it. I know.
Rebut
Part of speech: verb
Definition: To drive back or beat back; to repulse.