- Skeptic by Webster's
(a.) Alternative of Skeptical.(n.) A doubter as to whether any fact or truth can be certainly...
- Doubt by Webster's
(v.t.) To suspect; to fear; to be apprehensive of.(v.i.) To suspect; to fear; to be...
- Query by Webster's
(v.i.) To ask questions; to make inquiry.(n.) A question in the mind; a doubt; as, I have a query...
- dubiousness by WordNet
nounThe state of being unsure of something. synonyms: doubt, uncertainty, incertitude, dubiety,...
- doubtfulness by WordNet
nounThe state of being unsure of something. synonyms: doubt, uncertainty, incertitude, dubiety,...