Crestfalen or Crestfallen: How To spell?
The word Crestfalen is misspelled against Crestfallen, an adjective meaning "Having the crest, or upper part of the neck, hanging to one side; -- said of a horse."
Crestfallen has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings crestfa & en which should not be misspelled with single 'L'
Wrong Spelling:  crestfa-l-en  Correct Spelling:  crestfa-ll-en 
Explore spell check of Crestfallen to spell without errors.