Disheartened (11)
(Other definitions for crestfallen that I've seen before include "Dejected after blow to pride" , "Dejected after a failure" , "Sad, disappointed" , "Feeling a blow to one's pride" , "Deflated" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">disheartened</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for demoralised that I've seen before include "despairing" , "Disheartened" , "Having lost confidence" .)