The Collaborative International Dictionary of English v.0.48:
Ambiguously \Am*big"u*ous*ly\, adv. In an ambiguous manner; with doubtful meaning. [1913 Webster]WordNet (r) 3.0 (2006):
ambiguously adv 1: in an ambiguous manner; "this letter is worded ambiguously" [syn: ambiguously, equivocally] [ant: unambiguously, unequivocally]