Source : Webster's Revised Unabridged Dictionary (1913)

Unfortunate \Un*for"tu*nate\, a.
   Not fortunate; unsuccessful; not prosperous; unlucky;
   attended with misfortune; unhappy; as, an unfortunate
   adventure; an unfortunate man; an unfortunate commander;
   unfortunate business. -- n. An unfortunate person. --Hood. --
   {Un*for"tu*nate*ly}, adv. -- {Un*for"tu*nate*ness}, n.

Source : WordNet®

unfortunate
     adj 1: not favored by fortune; marked or accompanied by or
            resulting in ill fortune; "an unfortunate turn of
            events"; "an unfortunate decision"; "unfortunate
            investments"; "an unfortunate night for all concerned"
            [ant: {fortunate}]
     2: not auspicious; boding ill [syn: {inauspicious}] [ant: {auspicious}]
     3: unsuitable or regrettable; "an unfortunate choice of words";
        "an unfortunate speech"

unfortunate
     n : a person who suffers misfortune [syn: {unfortunate person}]