1) Cause of vacillation 2) Cognitive state 3) Doubt 4) Doubtfulness 5) Dubiousness 6) Incertitude 7) State of mind 8) Uncertainty Found on https://www.crosswordclues.com/clue/dubiety
Du·bi'e·ty noun ; plural Dubieties . [ Latin dubietas , from dubius . See Dubious .] Doubtfulness; uncertainty; doubt. [ R.] Lamb. 'The dubiety of his fate.' Sir W. Scott. Found on http://www.encyclo.co.uk/webster/D/127