The Collaborative International Dictionary of English v.0.48:

Forever \For*ev"er\ (f[o^]r*[e^]v"[~e]r), adv. [For, prep. +
   ever.]
   1. Through eternity; through endless ages; eternally.
      [1913 Webster]

   2. At all times; always.
      [1913 Webster]

   Note: In England, for and ever are usually written and
         printed as two separate words; but, in the United
         States, the general practice is to make but a single
         word of them.
         [1913 Webster]

   Forever and ever, an emphatic "forever."

   Syn: Constantly; continually; invariably; unchangeably;
        incessantly; always; perpetually; unceasingly;
        ceaselessly; interminably; everlastingly; endlessly;
        eternally.
        [1913 Webster]