The Collaborative International Dictionary
Irremissibly
Irremissible \Ir`re*mis"si*ble\, a. [L. irremissibilis: cf. F.
irr['e]missible. See In- not, and Remissible.]
Not remissible; unpardonable; as, irremissible crimes.
--Burke. -- Ir`re*mis"si*ble, n. -- Ir`re*mis"si*bly,
adv.
Wiktionary
irremissibly
adv. In an irremissible manner; unpardonably.