1. Having or bringing misfortune
   "Friday the 13th is an unlucky date";
   - luckless
    
2. Marked by or promising bad fortune
   "the unlucky prisoner was again put in irons";
   - doomed, ill-fated, ill-omened, ill-starred

Derived forms: unluckiest, unluckier

See also: hexed [N. Amer, informal], jinxed, unfortunate

Encyclopedia: Unlucky