Denial

Science / Psychiatry / Denial: defense mechanism in which the subject acts as if consciously unaware of a wish or reality.
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Other Words for Denial

Denial Noun Synonyms: retraction, recantation, renunciation, withdrawal
Denial Verb Synonyms: contradiction, negation, repudiation, refutation, disavowal, disclaimer, disaffirmation
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Denial-Of-Service Attack (DOS)

Technology / Email / Denial-Of-Service Attack (DOS): An organized effort to disrupt email or Web service by sending more messages or traffic than a server can handle, shutting it down until the messages stop. MORE

Denial Of Claim

Health / Health Insurance / Denial Of Claim: Refusal by an insurance company or carrier to honor a request by an individual (or his or her provider) to pay for health care services obtained from a health care professional. MORE