The Collaborative International Dictionary of English v.0.48:
Pardonably \Par"don*a*bly\, adv. In a manner admitting of pardon; excusably. --Dryden. [1913 Webster]WordNet (r) 3.0 (2006):
pardonably adv 1: in an excusable manner or to an excusable degree; "he was excusably late" [syn: excusably, forgivably, pardonably] [ant: inexcusably, unforgivably, unpardonably]