Exigent

Adjective

 * 1) Urgent; needing immediate action.
 * 2) Demanding; needing great effort.

Related terms

 * exigence
 * exigency
 * exigently

Thesaurus
Spartan, Spartanic, accurate, acute, astringent, attentive, austere, authoritarian, burdensome, burning, charged, choiceless, clamant, clamorous, climacteric, close, compelling, compulsory, conscientious, correct, critical, crucial, crying, decisive, delicate, demanding, detailed, dour, draining, emergent, exact, exacting, exorbitant, exquisite, extortionate, fine, finical, finicking, finicky, fussy, grasping, grievous, grim, harsh, high-pressure, high-priority, imperative, imperious, importunate, insistent, instant, kairotic, loaded, loud, mandatory, menacing, meticulous, minute, narrow, necessary, necessitous, nice, obligatory, oppressive, particular, persistent, pertinacious, pivotal, precise, precisianistic, precisionistic, pregnant, pressing, punctilious, punctual, refined, religious, rigid, rigorous, rugged, scrupulous, scrutinizing, severe, stern, strict, stringent, subtle, superincumbent, taxing, threatening, tough, unsparing, urgent, weighty, without choice