The Collaborative International Dictionary of English v.0.48:

Fervent \Fer"vent\, a. [F. fervent, L. fervens, -entis. p. pr.
   of fervere o the boiling hot, to boil, glow.]
   1. Hot; glowing; boiling; burning; as, a fervent summer.
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            The elements shall melt with fervent heat. --2 Pet.
                                                  iii. 10.
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   2. Warm in feeling; ardent in temperament; earnest; full of
      fervor; zealous; glowing.
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            Not slothful in business; fervent in spirit. --Rom.
                                                  iii. 11.
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            So spake the fervent angel.           --Milton.
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            A fervent desire to promote the happiness of
            mankind.                              --Macaulay.
      -- Fer"vent*ly, adv. -- Fer"vent*ness, n.
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            Laboring fervently for you in prayers. --Col. iv.
                                                  12.
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WordNet (r) 3.0 (2006):

fervently
    adv 1: with passionate fervor; "both those for and against are
           fervently convinced they speak for the great majority of
           the people"; "a fierily opinionated book" [syn:
           fierily, fervently, fervidly]