The Collaborative International Dictionary of English v.0.48:
Irreproachably \Ir`re*proach"a*bly\, adv. In an irreproachable manner; blamelessly. [1913 Webster]WordNet (r) 3.0 (2006):
irreproachably adv 1: in an irreproachable and blameless manner; "she had lived blamelessly until she met this man" [syn: irreproachably, blamelessly]