The Collaborative International Dictionary of English v.0.48:
Exhaustive \Ex*haust"ive\, a. Serving or tending to exhaust; exhibiting all the facts or arguments; as, an exhaustive method. Ex*haust"ive*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
exhaustively adv 1: in an exhaustive manner; "we searched the files thoroughly" [syn: thoroughly, exhaustively]