/ Dictionary / Index F fluctuate: Meaning and Definition of Find definitions for: fluc•tu•ate Pronunciation: (fluk'ch-āt"), [key] — v., -at•ed, -at•ing. —v.i. to change continually; shift back and forth; vary irregularly: The price of gold fluctuated wildly last month. to move back and forth in waves. —v.t. to cause to fluctuate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fluctuate (Thesaurus) fluctuant fluctuation Related Content Daily Word Quiz: vernacular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language