Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

exhaustive
     adj : very thorough; exhaustively complete; "an exhaustive study";
           "made a thorough search"; "thoroughgoing research"
           [syn: {thorough}, {thoroughgoing}]