unappeasable

Adj.

1.

unappeasable - not to be placated or appeased or moved by entreaty; "grim determination"; "grim necessity"; "Russia's final hour, it seemed, approached with inexorable certainty"; "relentless persecution"; "the stern demands of parenthood" Synonyms: grim, inexorable, relentless, unrelenting, stern, unforgiving

a hog for, acquisitive, all-devouring, avaricious, avenging, avid, bottomless, coveting, covetous, devouring, esurient, gluttonous, gobbling, grabby, grasping, greedy, grudgeful, hoggish, implacable, insatiable, insatiate, irreconcilable, limitless, mercenary, merciless, miserly, money-hungry, money-mad, mortal, omnivorous, overgreedy, piggish, punitive, punitory, quenchless, rancorous, rapacious, ravening, ravenous, relentless, retaliatory, revanchist, revengeful, ruthless, slakeless, sordid, swinish, unappeased, unflinching, unquenchable, unrelenting, unsated, unsatisfiable, unsatisfied, unslakeable, unslaked, unyielding, venal, vengeful, vindicatory, vindictive, voracious