[syn: unjustifiably, inexcusably]
The Collaborative International Dictionary of English v.0.48:
Inexcusably \In`ex*cus"a*bly\, adv.
With a degree of guilt or folly beyond excuse or
justification.
[1913 Webster]
Inexcusably obstinate and perverse. --Jortin.
[1913 Webster]
WordNet (r) 3.0 (2006):
inexcusably
adv 1: in an unpardonable manner or to an unpardonable degree;
"he was inexcusably cruel to his wife" [syn:
inexcusably, unpardonably, unforgivably] [ant:
excusably, forgivably, pardonably]
2: without any excuse; "he is unjustifiably harsh on her" [syn:
unjustifiably, inexcusably] [ant: justifiably]