(n.) Want of decision; want of settled purpose, or of firmness; indetermination; wavering of mind; irresolution; vacillation; hesitation.

ambitendency ambivalence capriciousness chance chanciness change of mind changeableness double-mindedness dubiety dubiousness erraticism erraticness fence-sitting fence-straddling fickleness fluctuation hesitancy hesitation incalculability incertitude inconstancy indecisiveness indemonstrability indeterminacy indetermination indeterminism infirmity of purpose instability irresolution luck mercuriality mugwumpery mugwumpism randomness second thoughts shilly-shally shilly-shallying suspense suspensefulness tergiversation to-and-fro unaccountability uncertainness uncertainty uncertainty principle undecidedness undeterminedness unforeseeableness unpredictability unprovability unsettledness unsettlement unsureness unverifiability vacillation wavering whimsicality