Source : Webster's Revised Unabridged Dictionary (1913)

Trippingly \Trip"ping*ly\, adv.
   In a tripping manner; with a light, nimble, quick step; with
   agility; nimbly.

         Sing, and dance it trippingly.           --Shak.

         Speak the speech . . . trippingly on the tongue.
                                                  --Shak.

Source : WordNet®

trippingly
     adv : moving with quick light steps; "she walked lightsomely down
           the long staircase" [syn: {lightsomely}]