Synonyms and related words :
actionable, applicable, authoritative, authorized, binding, canonical, competent, constitutional, dictated, didactic, formulary, hard and fast, instructive, judicial, juridical, just, justiciable, kosher, lawful, lawmaking, legal, legislative, legit, legitimate, licit, mandatory, official, preceptive, prescribed, prescript, prescriptive, regulation, rightful, rubric, sanctioned, standard, valid, within the law