Antonyms for "bears testimony" include words like disavow, refute, deny, renounce, contradict, disclaim, disprove, and discredit. Instead of affirming the truth of a statement or providing evidence in its favor, these antonyms suggest a repudiation or rejection of the claim. By disavowing or denying something, one is essentially saying that it is false or untrue. Refuting or contradicting a statement involves providing evidence that directly opposes it. Disclaiming or discrediting involves distancing oneself from a claim, either by disavowing ownership or by exposing flaws in its logic or evidence. All of these antonyms serve to challenge the veracity of a statement, rather than support it as "bears testimony" would suggest.