Source : Webster's Revised Unabridged Dictionary (1913)

Dysphoria \Dys*pho"ri*a\, n. [NL., fr. Gr. ?, fr. ? hard to
   bear; ? ill, hard + ? to bear: cf. F. dysphorie.] (Med.)
   Impatience under affliction; morbid restlessness;
   dissatisfaction; the fidgets.

Source : WordNet®

dysphoria
     n : abnormal depression and discontent [ant: {euphoria}]