adverb
in an unpardonable manner or to an unpardonable degree
-
he was inexcusably cruel to his wife
• Syn: ↑inexcusably, ↑unforgivably
• Ant: ↑forgivably (for: ↑unforgivably), ↑pardonably, ↑excusably (for: ↑inexcusably)
• Derived from adjective: ↑unforgivable (for: ↑unforgivably), ↑unpardonable, ↑inexcusable (for: ↑inexcusably)
Useful english dictionary. 2012.