inexpiable

English

Etymology

in- +‎ expiable

Adjective

inexpiable (comparative more inexpiable, superlative most inexpiable)

1. That cannot be expiated or atoned for; unforgivable.
   • 1863, Sheridan Le Fanu, The House by the Churchyard

     […] the only son of that disgraced and blood-stained nobleman, who, lying in gaol, under sentence of death for a foul and cowardly murder, swallowed poison, and so closed his guilty life with a tremendous crime, in its nature inexpiable.

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Spanish

Adjective

inexpiable m or f (masculine and feminine plural inexpiables)

1. unforgivable