- Demonstrate (something) to be false
- Refute
- To prove to be false or erroneous; to confute; to
refute.
- To disallow; to disapprove of.
- Disprove
- Disprove that potato or yam grows backwards
- Drive back
- Knock back
- Negate
- Prove to be false
- Refute
- Contradict
- contravene
- Declare as untrue
- Declare untrue
- Disaffirm
- Disavow
- Disclaim