The Collaborative International Dictionary of English v.0.48:
Showily \Show"i*ly\, adv. In a showy manner; pompously; with parade. [1913 Webster]WordNet (r) 3.0 (2006):
showily adv 1: with ostentation; in an ostentatious manner; "Mr Khrushchev ostentatiously wooed and embraced Castro at the U.N. general assembly" [syn: ostentatiously, showily] 2: in a fancy colorful manner; "he dresses rather flamboyantly" [syn: flamboyantly, showily, flashily]