Emily Dickinson Lexicon

vacillating (vascillating), verbal adj. [L. vacillāt-, stem of vacillāre, sway, stagger, totter.] (webplay: other, way).

1. Unsteady; stumbling; unstable; hesitating.
2. Wavering; fluctuating; changeable; inconsistent; shifty; [fig.] unreliable; capricious.