a. [ L. inexpiabilis: cf. F. inexpiable. See In- not, and Expiable. ] [ 1913 Webster ]

1. Admitting of no expiation, atonement, or satisfaction; as, an inexpiable crime or offense. Pomfret. [ 1913 Webster ]

2. Incapable of being mollified or appeased; relentless; implacable. [ Archaic ] “Inexpiable hate.” Milton. [ 1913 Webster ]

They are at inexpiable war with all establishments. Burke. [ 1913 Webster ]

n. Quality of being inexpiable. [ 1913 Webster ]