To declare before a court; plead at law; hence, in general, to produce as an argument, plea, or excuse; cite or quote in confirmation: as, to allege exculpatory facts; to allege the authority of a court.To pronounce with positiveness; declare; affirm; assert: as, to allege a fact.Synonyms Adduce, Allege, Assign, etc. (see adduce), bring forward, aver, asseverate, maintain, say, insist, plead, produce, cite.To alleviate; lighten; mitigate; allay.