(a.) Urging; pressing; besetting; plying, with importunity; calling for immediate attention; instantly important.

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