DOUBTFULNESS
doubt, dubiousness, doubtfulness, question
(noun) 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”
doubt, uncertainty, incertitude, dubiety, doubtfulness, dubiousness
(noun) the state of being unsure of something
Source: WordNet® 3.1
Etymology
Noun
doubtfulness (usually uncountable, plural doubtfulnesses)
The state or quality of being doubtful; doubt; uncertainty.
Synonyms
• dubiety
Source: Wiktionary
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.
Source: Webster’s Unabridged Dictionary 1913 Edition