Zeal·ous a.
  1. Filled with, or characterized by, zeal; warmly engaged, or ardent, in behalf of an object.
     He may be zealous in the salvation of souls.   --Law.
  2. Filled with religious zeal.  [Obs.]
  -- Zeal*ous*ly, adv. -- Zeal*ous*ness, n.
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  zealously
       adv : in a zealous manner; "she worked zealously to raise funds
             for the literacy project"