1. iniquitous Every criminal act is illegal or unlawful, but illegal or unlawful acts may not be criminal. Offenses against public law are criminal; offenses against private rights are merely illega Synonyms: criminal, abominable, flagitious, immoral, sinful, vile, culpable, guilty, iniquitous, unlawful, wicked, felonious, illegal, nefarious, vicious, wrong Antonyms: innocent, lawful, meritorious, right, just, legal, moral, virtuous, nightly, nocturnal