= failure, n. 1. Obsolete except in phrase without fail; now used only to strengthen an injunction or a promise; formerly also with statements of…

Failure to perform a task or duty correctly or adequately, esp. so as to result in negative consequences; the responsibility or culpability…

Failure to perform a duty or fulfil an obligation; (now chiefly) spec. failure or refusal to meet financial commitments. Also: an instance of this.

An act or instance of delinquency; a crime, an offence; a failure to pay a debt or tax. Also as a mass noun.

Failure in or neglect of one's duty or obligations; violation of a rule or code of conduct; spec. failure to pay a debt or tax. Also: the state or…

Neglect or violation of duty; immoral or criminal behaviour; delinquency. Also: a crime, an offence.

Immoral quality or character; culpability under moral law. Cf. delinquency, n. 1a.

In modern use implying a morally wrong or reprehensible abandonment or neglect; chiefly in the phrase dereliction of duty.