The Collaborative International Dictionary of English v.0.48:
Saucily \Sau"ci*ly\, adv. In a saucy manner; impudently; with impertinent boldness. --Addison. [1913 Webster]WordNet (r) 3.0 (2006):
saucily adv 1: in an impudent or impertinent manner; "a lean, swarthy fellow was peering through the window, grinning impudently" [syn: impertinently, saucily, pertly, freshly, impudently]