The Collaborative International Dictionary
Inexcusably
Inexcusably \In`ex*cus"a*bly\, adv. With a degree of guilt or folly beyond excuse or justification.
Inexcusably obstinate and perverse.
--Jortin.
Wiktionary
inexcusably
adv. In an inexcusable manner.
WordNet
inexcusably
adv. in an unpardonable manner or to an unpardonable degree; "he was inexcusably cruel to his wife" [syn: unpardonably, unforgivably] [ant: excusably, excusably, excusably]
without any excuse; "he is unjustifiably harsh on her" [syn: unjustifiably] [ant: justifiably]
Usage examples of "inexcusably".
Except, of course, for this inexcusably sloppy business of escapees like your-self and Roy here.
Was not Hamlet being inexcusably personal in thus taunting a man who had the power of life and death over him?