The Collaborative International Dictionary of English v.0.48:

Evermore \Ev`er*more"\, adv.
   During eternity; always; forever; for an indefinite period;
   at all times; -- often used substantively with for.
   [1913 Webster]

         Seek the Lord . . . Seek his face evermore. --Ps. cv.
                                                  4.
   [1913 Webster]

         And, behold, I am alive for evermore.    --Rev. i. 18.
   [1913 Webster]

         Which flow from the presence of God for evermore.
                                                  --Tillotson.
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         I evermore did love you, Hermia.         --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

evermore
    adv 1: at any future time; in the future; "lead a blameless life
           evermore" [syn: evermore, forevermore]
    2: for a limitless time; "no one can live forever"; "brightly
       beams our Father's mercy from his lighthouse evermore"-
       P.P.Bliss [syn: everlastingly, eternally, forever,
       evermore]

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "evermore":
   always, aye, eternally, ever, ever and again, ever and anon,
   for all time, for aye, for good, for keeps, forever,
   forever and aye, forevermore, in all ages, now and forever,
   throughout the ages, till doomsday, till time stops