/ Dictionary / Index V vacillation: Meaning and Definition of Find definitions for: vac•il•la•tion Pronunciation: (vas"u-lā'shun), [key] — n. an act or instance of vacillating. a state of indecision or irresolution. unsteady movement; fluctuation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vacillation (Thesaurus) vacillating vacillatory Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language