The Collaborative International Dictionary of English v.0.48:

Tinselly \Tin"sel*ly\, adv.
   In a showy and cheap manner.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tinselly \Tin"sel*ly\, a.
   Like tinsel; gaudy; showy, but cheap.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tinselly
    adj 1: glittering with gold or silver [syn: clinquant,
           tinseled, tinselly]