deny
/di-ˈnī/
verb
to declare (something) to be untrue
to refuse to admit or acknowledge (something) : disavow
to give a negative answer to
They denied the allegations.
deny gainsay contradict contravene mean to refuse to accept as true or valid. deny implies a firm refusal to accept as true, to grant or concede, or to acknowledge the existence or claims of. gainsay implies disputing the truth of what another has said.
idiom
to not allow oneself to enjoy things or to have the things one wants
On this diet, I don't feel like I'm denying myself.
idiom
to give/refuse permission to see
He was granted/denied access to the report.