1. (a.) Urgent; persistent; persevering\.

2. (a.) Standing or resting on something; as, an insistent wall.

3. (a.) See Incumbent.

acute assertive assiduous burning cajoling clamant clamorous coaxing compelling constant continuing critical crucial crying demanding determined diligent dire dogged draining dunning emphatic enduring exacting exigent exorbitant extortionate faithful firm forceful grasping high-pressure high-priority immutable imperative imperious importunate inalterable indefatigable indomitable industrious inexorable instant invincible lasting loud loyal nagging never-tiring obstinate obtrusive patient patient as Job permanent perseverant persevering persistent persisting pertinacious pestering pivotal plaguing plodding plugging preoccupied pressing rapt relentless resolute resounding sedulous single-minded sleepless slogging stable steadfast steady stubborn taxing teasing tenacious tireless unabating uncompromising unconquerable undaunted undiscouraged undrooping unfailing unfaltering unflagging unflinching unintermitting uninterrupted unnodding unrelaxing unrelenting unremitting unsleeping unswerving untiring unwavering unwearied unwearying unwinking unyielding urgent utterly attentive weariless wheedling