| adjective | not conforming to legality, moral law, or social convention “an unconventional marriage” |
| adjective | contrary to or prohibited by or defiant of law “unlawful measures” |
| adjective | not morally right or permissible “unlawful love” |
| adjective | having no legally established claim “the wrongful heir to the throne” |
| adjective | contrary to or forbidden by law “an illegitimate seizure of power” |
| improperness | noun | an improper demeanor |
| unconventionality | noun | unorthodoxy by virtue of being unconventional |
| unlawfulness | noun | the quality of failing to conform to law |
| wrongfulness | noun | that which is contrary to the principles of justice or law |
| illicitness | noun | the quality of not conforming strictly to law |
| outlaw | noun | someone who has committed a crime or has been legally convicted of a crime |