'Doubtfully' definitions:

Definition of 'doubtfully'

From: WordNet
adverb
In a doubtful manner; "Gerald shook his head doubtfully" [syn: doubtfully, dubiously]

Definition of 'Doubtfully'

From: GCIDE
  • Doubtfully \Doubt"ful*ly\, adv. In a doubtful manner. [1913 Webster]
  • Nor did the goddess doubtfully declare. --Dryden. [1913 Webster]