| Mandatory 1. (a.) Containing a command; required; compulsory; as, a mandatory meeting; preceptive; directory. 2. (n.) Same as Mandatary. Thesaurus Entries absolute, authoritative, binding, canonical, choiceless, commanded, commanding, compelling, compulsatory, compulsory, conclusive, de rigueur, decisive, decretory, demanded, dictated, didactic, entailed, essential, exigent, final, forced, formulary, hard and fast, hard-and-fast, imperative, imperious, importunate, imposed, indispensable, inevitable, instructive, involuntary, irrevocable, mandated, must, necessary, necessitous, needed, needful, obligatory, official, peremptory, preceptive, prescribed, prescript, prescriptive, regulation, required, requisite, rubric, standard, statutory, ultimate, urgent, without appeal, without choice |