\In*ex"pi*a*ble\, a. [L. inexpiabilis: cf. F. inexpiable. See {In-} not, and {Expiable}.] 1. Admitting of no expiation, atonement, or satisfaction; as, an inexpiable crime or offense. --Pomfret. 2. Incapable of being mollified or appeased; relentless; implacable. [Archaic] ``Inexpiable hate.'' --Milton. They are at inexpiable war with all establishments. --Burke.