Webster’s Revised Unabridged Dictionary · 1913
Dishearten
Dis·heart′en (dĭs·härt′'n), v. t. [imp. & p. p. Disheartened; p. pr. & vb. n. Disheartening.] [Pref. dis- + hearten.] To discourage; to deprive of courage and hope; to depress the spirits of; to deject.
Regiments . . . utterly disorganized and disheartened. Macaulay.
Syn. — To dispirit; discourage; depress; deject; deter; terrify.