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]WordNet (r) 3.0 (2006):
trippingly adv 1: moving with quick light steps; "she walked lightsomely down the long staircase" [syn: lightsomely, trippingly]