Here's what rhymes with ultraviole.
whole role soul coal goal hole pole roll sole bowl fol mole poll stole toll knoll shoal dole foal bole boll thole vole kohl tole dolour skoal parole scroll stroll systole droll troll unroll prole patrol glycerol enroll casserole extol vacuole cajole petiole condole oriole maypole extoll rissole control buttonhole bedroll pigeonhole camisole cubbyhole beanpole innersole profiterole arteriole decontrol quadrupole