(ˈ)in|sāshəbəl, əns-, sometimes -shēə- adjective
Etymology: Middle English insaciable, insessiabyll, from Middle French or Latin; Middle French insaciable, from Old French, from Latin insatiabilis, from in- in- (I) + satiare to satisfy + -abilis -able — more at satiate
: incapable of being satisfied or appeased
an insatiable desire for knowledge
• in·sa·tia·ble·ness noun -es