mandatory

• POS: Adjective, Noun
• HYPHEN: man=da=to=ry

CIDE DICTIONARY

mandatory, a. [L. mandatorius.].

•  Containing a command; preceptive; directory.  [1913 Webster]
•  Obligatory; compulsory; required by authority.  [PJC]
•  Not optional; not able to be modified or disregarded; as, seven mandatory clauses in the contract.  [PJC]

mandatory, n. 

 Same as Mandatary.  [1913 Webster]

OXFORD DICTIONARY

mandatory, adj. & n.
--adj.
1 of or conveying a command.
2 compulsory.
--n. (pl. -ies) = MANDATARY.

Derivative

mandatorily adv.

Etymology

LL mandatorius f. L (as MANDATE)

THESAURUS

mandatory

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