mandatory

mandatory
    adj 1: required by rule; "in most schools physical education is
           compulsory"; "attendance is mandatory"; "required
           reading" [syn: {compulsory}, {mandatory}, {required}]
    n 1: the recipient of a mandate [syn: {mandatary}, {mandatory}]
    2: a territory surrendered by Turkey or Germany after World War
       I and put under the tutelage of some other European power
       until they are able to stand by themselves [syn: {mandate},
       {mandatory}]
    

Mandatory \Man"da*to*ry\, a. [L. mandatorius.]
   1. Containing a command; preceptive; directory.
      [1913 Webster]

   2. Obligatory; compulsory; required by authority.
      [PJC]

   3. (Law) Not optional; not able to be modified or
      disregarded; as, seven mandatory clauses in the contract.
      [PJC]
    

Mandatory \Man"da*to*ry\, n.
   Same as {Mandatary}.
   [1913 Webster]
    

57 Moby Thesaurus words for "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