From WordNet (r) 3.0 (2006):
tacky
adj 1: (of a glutinous liquid such as paint) not completely
dried and slightly sticky to the touch; "tacky varnish"
2: tastelessly showy; "a flash car"; "a flashy ring"; "garish
colors"; "a gaudy costume"; "loud sport shirts"; "a
meretricious yet stylish book"; "tawdry ornaments" [syn:
brassy, cheap, flash, flashy, garish, gaudy,
gimcrack, loud, meretricious, tacky, tatty,
tawdry, trashy]