The Collaborative International Dictionary of English v.0.48:
Conclusively \Con*clu"sive*ly\, adv. In the way of conclusion; decisively; positively. --Burke. [1913 Webster]WordNet (r) 3.0 (2006):
conclusively adv 1: in a conclusive way; "we settled the problem conclusively" [syn: conclusively, once and for all] [ant: inconclusively]