n. A refusal to comply with or satisfy a request.n. A refusal to grant the truth of a statement or allegation; a contradiction.n. Law The opposing by a defendant of an allegation of the plaintiff.n. A refusal to accept or believe something, such as a doctrine or belief.n. Psychology An unconscious defense mechanism characterized by refusal to acknowledge painful realities, thoughts, or feelings.n. The act of disowning or disavowing; repudiation.n. Abstinence; self-denial.