† unˈexpiable,a.Obs. [un-1 7 b and 5 b.] = inexpiable a. 1. 1606Bp. J. King Serm. Sept. 46 The fault is unexpiable; the blood of martyrdome cannot wash out this spot.1657Trapp Comm. Esther ii. 10 This lyeth upon them as a punishment for their unexpiable guilt.