(a.) Incapable of being satisfied or appeased; as, an insatiable appetite, thirst, or desire\.

Apician a hog for acquisitive all-devouring avaricious avid bolting bottomless clamorous coveting covetous cramming crapulent crapulous crying demanding devouring edacious esurient exigent glutting gluttonizing gluttonous gobbling gorging grabby grasping greedy gulping guttling guzzling hoggish hyperphagic importunate insatiate insistent intemperate limitless mercenary miserly money-hungry money-mad omnivorous overgreedy piggish polyphagic pressing quenchless rapacious ravening ravenous slakeless sordid stuffing swinish unappeasable unappeased unquenchable unsated unsatisfiable unsatisfied unslakeable unslaked urgent venal voracious wolfing yearning