D defs.my
Entry 2 senses Webster, 1913

Vacillation

/văsˌ-əl-āsh'-ən/ · Vac·il·la·tion · IPA /væsɪˈleɪʃən/
01 n. The act of vacillating; a moving one way and the other; a wavering.
  1. 1.
    The act of vacillating; a moving one way and the other; a wavering.
    “His vacillations, always exhibited most pitiably in emergencies.” Macaulay.
  2. 2.
    Unsteadiness of purpose; changeableness.
    “There is a vacillation, or an alternation of knowledge and doubt.” Jer. Taylor.