Deny (verb)

1. To refuse to acknowledge or accept the truth, existence, or validity of something.
2. To refuse to give or grant something requested or desired.
3. To refuse to admit or confess to something.
4. To contradict or negate something.
5. To disavow or disown something.

Origin:

From old french denier, from latin denegare, from de- + negare (to deny).

Examples:

1. The company denied any wrongdoing in the scandal.
2. He denied that he had stolen the money.
3. She denied the allegations of plagiarism.
4. The evidence denied their claims.
5. The defendant denied any involvement in the crime.