Source : Webster's Revised Unabridged Dictionary (1913)

Dextrous \Dex"trous\, a., Dextrously \Dex"trous*ly\, adv.,
Dextrousness \Dex"trous*ness\, n.
   Same as {Dexterous}, {Dexterously}, etc.

Source : WordNet®

dextrously
     adv : with dexterity; in a dexterous manner; "dextrously he untied
           the knots" [syn: {dexterously}, {deftly}]