(n.) The quality or condition of being illegal; unlawfulness; as, the illegality of trespass or of false imprisonment; also, an illegal act.

aberrance aberrancy abnormality crime criminality delict delinquency deviance deviancy felony improperness impropriety inappropriateness incorrectness indecorousness indecorum inequitableness inequity infraction iniquitousness iniquity injustice misdemeanor offense sinfulness tort undueness unfitness unfittingness unjustness unlawfulness unmeetness unrighteousness unseemliness unsuitability violation wickedness wrong wrongdoing wrongfulness wrongness