Vacillation

n.	1.	The act of vacillating; a moving one way and the other; a wavering. His vacillations, always exhibited most pitiably in emergencies. - Macaulay.
	2.	Unsteadiness of purpose; changeableness. There is a vacillation, or an alternation of knowledge and doubt. - Jer. Taylor.

Noun	1.	vacillation - indecision in speech or action Synonyms: hesitation, wavering
	2.	vacillation - changing location by moving back and forth Synonyms: swinging, swing

alternation, capriciousness, chance, chanciness, changeableness, dallying, demurral, dillydallying, equivocation, erraticism, erraticness, fickleness, fluctuation, frequency, frequency band, frequency spectrum, harmonic motion, hesitancy, hesitation, incalculability, incertitude, indecision, indecisiveness, indemonstrability, indeterminacy, indetermination, indeterminism, irresolution, libration, luck, nutation, oscillation, pendulation, periodicity, randomness, resonance, resonance frequency, seesawing, shifting, shilly-shally, shilly-shallying, shuffling, suspense, suspensefulness, teeter-tottering, teetering, tottering, unaccountability, uncertainness, uncertainty, uncertainty principle, undecidedness, undeterminedness, unforeseeableness, unpredictability, unprovability, unsureness, unverifiability, variation, vibrancy, vibratility, vibration, vicissitude, wavering, whimsicality, wobbling