to declare (something) to be untrue or invalid; to refuse to accept (an assertion)
to refuse to give or permit something to (somebody, oneself)
to refuse to grant (e.g. a request or, access)
to disown or repudiate (somebody or something)
deny oneself
to refrain ascetically from self-indulgence or pleasure
[Middle English denyen via Old French from Latin denegare, from de- + negare to deny]