tawdry

brummagem, flashy, garish, gaudy, glitzy, kitsch, kitschy, meretricious, ostentatious, showy, splashy, swank (or swanky)

graceless, inelegant, lurid, tacky, tasteless, tinselly, vulgar

bad, bargain-basement, bum, cheap, cheapjack, cheesy, coarse, common, crappy [slang], cut-rate, el cheapo, execrable, gimcrack, inferior, junky, lousy, low-grade, low-rent, mediocre, miserable, poor, rotten, rubbishy, schlock (or schlocky), second-rate, shoddy, sleazy, terrible, trashy, trumpery, wretched

seedy, shabby, tacky

counterfeit, fake, phony (also phoney), sham

supercheap, ultracheap

indifferent, lackluster, second-class