Antonyms for "gives credence to" include "dismisses," "ignores," "distrusts," "discredits," "denies," "refutes," "disproves," "debunks," "rejects," and "opposes." When someone "gives credence to" a claim or assertion, it means they believe it or consider it to be true. However, using antonyms, we can describe a response that indicates skepticism or outright rejection of the claim. In some cases, it may be appropriate or necessary to "dismiss" or "deny" a claim that lacks evidence or is demonstrably false. Therefore, antonyms for "gives credence to" can be useful tools for critical thinking and effective communication.