/ Dictionary / Index C crestfallen: Meaning and Definition of Find definitions for: crest•fall•en Pronunciation: (krest'fô"lun), [key] — adj. dejected; dispirited; discouraged. having a drooping crest or head. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: crestfallen (Thesaurus) crested wheatgrass cresting Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language