trippingly

from WordNet (r) 3.0 (2006)

trippingly
    adv 1: moving with quick light steps; "she walked lightsomely
           down the long staircase" [syn: {lightsomely},
           {trippingly}]

from The Collaborative International Dictionary of English v.0.48

Trippingly \Trip"ping*ly\, adv.
   In a tripping manner; with a light, nimble, quick step; with
   agility; nimbly.
   [1913 Webster]

         Sing, and dance it trippingly.           --Shak.
   [1913 Webster]

         Speak the speech . . . trippingly on the tongue.
                                                  --Shak.
   [1913 Webster]