The Collaborative International Dictionary of English v.0.48:
Bewildering \Be*wil"der*ing\, a. Causing bewilderment or great perplexity; as, bewildering difficulties. -- Be*wil"der*ing*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
bewilderingly adv 1: in a bewildering and confusing manner; "her situation was bewilderingly unclear" [syn: bewilderingly, confusingly]