doubtfulness
doubt·ful·ness
noun
2.
uncertainty about the truth or factuality of existence of something
- “the dubiousness of his claim”
- “there is no question about the validity of the enterprise”
Origin
From Middle English doutefulnesse, dowtefulnesse, equivalent to doubtful + -ness.
Related words
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.