D defs.my
Entry 2 senses Webster, 1913

Inexpiable

· In·ex·pi·a·ble · IPA
01 a. Admitting of no expiation, atonement, or satisfaction; as, an inexpiable crime or offense.
  1. 1.
    Admitting of no expiation, atonement, or satisfaction; as, an inexpiable crime or offense.
  2. 2.
    Incapable of being mollified or appeased; relentless; implacable.[Archaic]
    “They are at inexpiable war with all establishments.” Burke.