imperative Synonyms

required imperative mood obligatory optative ought overruling inevitable paramount peremptory precondition prerequisite prescript needful needed insistent instant irremissible magisterial mandatory masterful must necessary necessity need pressing proviso tyrannical jussive mood imperative form evaluative life-and-death life-or-death mandatorily non-finite ergative sine qua non of the essence all important vital requirement requisite right-hand stative subjunctive unavoidable unavoided urgency urgent unexcused inevitability