irremissible
adjective
[ ɪrɪˈmɪsɪb(ə)l ]
• (of a crime) unpardonable.
• (of an obligation or duty) binding.
Origin:
late Middle English: from Old French, or from ecclesiastical Latin irremissibilis, from in- ‘not’ + remissibilis (from remittere ‘remit’).
