/ Dictionary / Index F fluctuant: Meaning and Definition of Find definitions for: fluc•tu•ant Pronunciation: (fluk'ch-unt), [key] — adj. fluctuating; varying; unstable. undulating; moving or seeming to move in waves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flubdub fluctuate Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language