Source : Webster's Revised Unabridged Dictionary (1913)

Malaise \Ma`laise"\, n. [F., fr. mal ill + aise ease.] (Med.)
   An indefinite feeling of uneasiness, or of being sick or ill
   at ease.

Source : WordNet®

malaise
     n : physical discomfort (as mild sickness or depression) [syn: {unease},
          {uneasiness}]