Vāc'il-lā'tion, n.

n. [Fr. vacillation, It. vacillazione, Sp. vacilacion, Pg. vacillação, Lat. vacillatio.]

1. The act of vacillating; a wavering; a moving one way and the other; a reeling or staggering.
2. Fluctuation of mind; unsteadiness; change from one object to another; inconstancy. “His vacillations, always exhibited most pitiably in emergencies.” Macaulay.

There is a vacillation, or an alternation of knowledge and doubt. Bp. Taylor.