The Collaborative International Dictionary of English v.0.48:
Unsatiable \Un*sa"ti*a*ble\, a. Insatiable. [Obs.] --Hooker. -- Un*sa"ti*a*ble*ness, n. [Obs.] -- Un*sa"ti*a*bly, adv. [Obs.] [1913 Webster]WordNet (r) 3.0 (2006):
unsatiable adj 1: impossible to satisfy; "an insatiate appetite"; "an insatiable demand for old buildings to restore"; "his passion for work was unsatiable" [syn: insatiate, insatiable, unsatiable] [ant: satiate, satiated]