The Oxford Thesaurus An A-Z Dictionary of Synonyms - law n.

1) rule, regulation, ordinance, statute, act, enactment, by-law, measure, edict, decree, order, directive, injunction, command, commandment, canon, mandate, ukase: They have a law that forbids smoking on aeroplanes. 2) corpus juris, (legal) code, constitution, rules and regulations, charter, Law equity: The law must be applied equally to all citizens. 3) principle, proposition, theory, theorem, formula, axiom, deduction, corollary, postulate, conclusion, inference: Not every observable phenomenon obeys the laws of physics.