Direct opposites:
* Deny: This is the most direct opposite of claiming something, meaning to state that something is not true.
* Refute: This is similar to deny, but it implies a more reasoned and detailed argument against the claim.
Other related terms:
* Concede: To admit that something is true, the opposite of claiming it is false.
* Retract: To take back a previous claim, often because it was proven false.
* Disprove: To provide evidence that a claim is false.
* Disagree: To have a different opinion than the person making the claim.
Context-specific opposites:
* Give up: If someone is claiming something they have a right to, the opposite might be to give up their claim.
* Abandon: Similar to "give up," but it can also refer to abandoning a claim that was previously made.
Ultimately, the best opposite of "claim" will depend on the specific situation and the meaning you want to convey.