doubtfully

from WordNet (r) 3.0 (2006)

doubtfully
    adv 1: in a doubtful manner; "Gerald shook his head doubtfully"
           [syn: {doubtfully}, {dubiously}]

from The Collaborative International Dictionary of English v.0.48

Doubtfully \Doubt"ful*ly\, adv.
   In a doubtful manner.
   [1913 Webster]

         Nor did the goddess doubtfully declare.  --Dryden.
   [1913 Webster]

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