Source : Webster's Revised Unabridged Dictionary (1913)

Disheartenment \Dis*heart"en*ment\, n.
   Discouragement; dejection; depression of spirits.

Source : WordNet®

disheartenment
     n 1: the feeling of despair in the face of obstacles [syn: {discouragement},
           {dismay}]
     2: a communication that leaves you disheartened or daunted