cheesy

graceless, inappropriate, incorrect, unbecoming, unseemly, unsuitable, wrong

coarse, crude, unrefined, vulgar

cheap, common, inferior, junky, lousy, low-grade, second-rate, shoddy, sleazy, tawdry

flashy, garish, gaudy, glitzy, grotesque, loud, ostentatious, showy, splashy

useless, valueless, worthless

indifferent, lackluster, second-class

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

seedy, shabby, tacky

counterfeit, fake, phony (also phoney), sham

supercheap, ultracheap