One who vacillates.

plural of vacillator

(intransitive) To sway unsteadily from one side to the other; oscillate. / (intransitive) To swing indecisively from one course of action or opinion to another.

Indecision in speech or action. / Changing location by moving back and forth.

present participle of vacillate

Liable to vacillate.

Vacillation.

Third-person singular simple present indicative form of vacillate

simple past tense and past participle of vacillate

plural of vacillation