The Collaborative International Dictionary of English v.0.48:

Nimbly \Nim"bly\, adv.
   In a nimble manner; with agility; with light, quick motion.
   [1913 Webster]

WordNet (r) 3.0 (2006):

nimbly
    adv 1: in a nimble or agile manner; with quickness and lightness
           and ease; "nimbly scaling an iron gate"- Charles Dickens;
           "leaped agilely from roof to roof" [syn: agilely,
           nimbly]

Moby Thesaurus II by Grady Ward, 1.0:

39 Moby Thesaurus words for "nimbly":
   ably, adeptly, adroitly, agilely, aptly, artfully, artistically,
   brilliantly, capably, cleverly, competently, cunningly, deftly,
   dexterously, dextrously, efficiently, excellently, expeditiously,
   expertly, featly, handily, ingeniously, masterfully, neatly,
   proficiently, promptly, quickly, readily, resourcefully,
   skillfully, spryly, superbly, swiftly, well, with consummate skill,
   with dispatch, with finesse, with genius, with skill