Antonym/counterwords: criminal, illegal, unconstitutional, clandestine, unauthorized, illegal, smuggling, illicit, criminal Other alternative words that can be used instead of legal are, recognized, authorized, authorized, chartered, own, constitutional, contractual, prescribed, due, enforced, ordered, just, judicial, authorized, innocent, condemned, judicial, just, justified, legalized, legitimate, legitimate, legitimate, the level, ordered, adopted, prescribed, correct, protected, just, lawful, sanctioned, solid, legal, simple, safe, valid, justified. In relation to or characteristic of the legal profession synonyms/similar words: authorized, solid, effective, established or justified by law or official or recognized rules.