WordWeb Online

1. Not wanted; not needed
   "tried to give away unwanted kittens"
    
2. Not attractive to or wanted by anyone
   "removed the unwanted vegetation";
   - undesirable

See also: abdicable, casteless, cast-off, discarded, friendless, hateful, out of it, outcast, outcaste, throwaway, thrown-away, uncalled-for, unclaimed, undesired, unenviable, uninvited, unloved, unsought, unwelcome, unwished, unwished-for

Antonym: wanted

Encyclopedia: Unwanted