crestfallen definition
Define crestfallen. crestfallen synonyms, crestfallen pronunciation, crestfallen translation, English dictionary definition of crestfallen. adj. Dispirited and depressed; dejected. crestâ²fallâ²enÂ·ly adv. crestâ²fallâ²enÂ·ness n. adj dejected, depressed, or disheartened ËcrestËfallenly adv adj.