The Collaborative International Dictionary of English v.0.48:

Unblessed \Un*blessed"\, Unblest \Un*blest\, a. [Pref. un- not +
   blessed, blest.]
   Not blest; excluded from benediction; hence, accursed;
   wretched. "Unblessed enchanter." --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Unblessed \Unblessed\
   See blessed.

WordNet (r) 3.0 (2006):

unblessed
    adj 1: not provided with something desirable; "a hovel unblessed
           with electricity or running water"

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "unblessed":
   badly off, depressed, dire, donsie, doomful, evil-starred, fatal,
   fleshly, fortuneless, funest, hapless, ill off, ill-starred,
   in adverse circumstances, inauspicious, luckless, mundane,
   nonsacred, ominous, out of luck, planet-struck, profane, reprobate,
   sad, secular, short of luck, star-crossed, temporal,
   underprivileged, unfortunate, unhallowed, unhappy, unholy, unlucky,
   unprosperous, unprovidential, unregenerate, unsacred, unsanctified,
   worldly