forever in WordNet English dictionary

1. without interruption
   "the world is constantly changing"
   constantly  always  forever  perpetually  incessantly  constantly  always  forever  perpetually  incessantly 
   
2. for a limitless time
   "no one can live forever"; "brightly beams our Father's mercy from his lighthouse evermore"- P.P.Bliss
   everlastingly  eternally  forever  evermore  everlastingly  eternally  forever  evermore 
   
3. for a very long or seemingly endless time
   "she took forever to write the paper"; "we had to wait forever and a day"
   forever  forever and a day  forever  forever and a day