/ Dictionary / Index V vacillating: Meaning and Definition of Find definitions for: vac•il•lat•ing Pronunciation: (vas'u-lā"ting), [key] — adj. not resolute; wavering; indecisive; hesitating: an ineffectual, vacillating person. oscillating; swaying; fluctuating: a vacillating indicator. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vacillating (Thesaurus) vacillate vacillation Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language