[syn: doubt, dubiousness, doubtfulness, question]
The Collaborative International Dictionary of English v.0.48:
Doubtfulness \Doubt"ful*ness\, n.
1. State of being doubtful.
2. Uncertainty of meaning; ambiguity; indefiniteness. " The
doubtfulness of his expressions." --Locke.
3. Uncertainty of event or issue. --Bacon.
WordNet (r) 3.0 (2006):
n 1: the state of being unsure of something [syn: doubt,
uncertainty, incertitude, dubiety, doubtfulness,
dubiousness] [ant: certainty]
2: uncertainty about the truth or factuality or existence of
something; "the dubiousness of his claim"; "there is no
question about the validity of the enterprise" [syn: doubt,
dubiousness, doubtfulness, question]