dowdy

slatternly

chaotic, cluttered, confused, disarranged, disheveled (or dishevelled), disordered, messed, messy, muddled, mussed, mussy, rumpled, shaggy, uncombed, wrinkled

shabby, sleazy

besmirched, blackened, dingy, dirty, filthy, foul, grimy, grubby, grungy, mucky, nasty, scroungy, scuzzy [slang], soiled, spotted, squalid, stained, sullied, unclean, uncleanly

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

outmoded, out-of-date, passé

coarse, crude, unrefined, vulgar

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

flashy, garish, gaudy, glitzy, grotesque, kitsch, kitschy, loud, ostentatious, overdone, showy, splashy