The Collaborative International Dictionary of English v.0.48:
Tawdrily \Taw"dri*ly\, adv. In a tawdry manner. [1913 Webster]WordNet (r) 3.0 (2006):
tawdrily adv 1: in a tastelessly garish manner; "the temple was garishly decorated with bright plastic flowers" [syn: garishly, tawdrily, gaudily]