Synonyms and related words :
active, actuating, acute, animating, ardent, begging, burning, cajoling, causal, causative, choiceless, clamant, clamorous, coaxing, compelling, compulsory, critical, crucial, crying, cursory, demanding, directive, draining, driving, dunning, earnest, emergency, emphatic, energetic, enthusiastic, exacting, exciting, exigent, exorbitant, expeditious, extortionate, fervent, festinate, feverish, fiery, firm, flying, forceful, furious, glowing, grasping, hasty, high-pressure, high-priority, hurried, immediate, impassioned, impelling, imperative, imperious, important, importunate, impulsive, inducive, insistent, instant, last-minute, life-and-death, life-or-death, loud, mandatory, motivating, motivational, motive, moving, nagging, necessary, necessitous, obligatory, on the spot, passing, passionate, persistent, pertinacious, pestering, pivotal, plaguing, pressing, prompt, provoking, quick, rush, serious, slap-bang, slapdash, snap, solicitous, speedy, stimulating, stirring, superficial, swift, taxing, teasing, tenacious, vehement, vital, warm, wheedling, without choice