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doubtfulness
noun
1.
the state of being unsure of something
dwere
niggle
tween
tweenful
twimind
twimindedness
doubt
dubiety
dubiousness
incertitude
uncertainty
Derived from:
doubtful
2.
uncertainty about the truth or factuality or existence of something
dout
doubt
dubiousness
question
Derived from:
doubtful