Here's what rhymes with costui.
buoy dewy chewy sui ui neue gooey hooey phooey ennui gluey screwy lifebuoy ratatouille Words that almost rhyme with costui
duty duly booty juicy booby tutti spooky boogie choosy toothy boozy bootie choosey bootee beauty newly truly movie unduly coolly moody puny ruby ubi uni coolie roomy sooty astutely fruity goofy sushi droopy foully kabuki loony broody coulee floury loopy rheumy snooty soupy woozy bluesy butty kooky looney newbie newsy smoothie cootie floozy mussy snoopy floozie fluky foodie fumy scuzzy flukey fuggy kookie loonie smoothy sootier yukky snootier gloomy loosely smoothly cruelly rudely unruly hugely shrewdly moduli noonday contumely obtusely cutie groovy groupie patchouli untruly croupy lewdly bouzouki googly sprucely cutey cruelty acutely crudely glomeruli lacunae mutely traduce cutesy muesli succubi cutely abstrusely cutesie calculi profusely diffusely superfluity uncouthly absolutely resolutely dissolutely irresolutely