Here's what rhymes with kiou.
to who you do two new too due knew du grew que u crew coup q qu shoe zu clue cue dew glue lieu queue shew su sue tu vous chew cu deux fu lu rue zoo bu hu ju jus ku loo mu nu peu pu seu shu sou vu woo yew yu boo chou chu coo cou doo ewe feu gu ru shou thu tue vou wou wu clew goo moo pooh poo shoo gnu roux thew whew through few true view blue drew threw blew flew screw anew canoe hue accrue flue slew stew adieu ado brew flu pew skew thru fue hew mieux shrew tzu vue mew kazoo slue phew achoo into pursue renew undue ensue taboo undo piu tattoo beaucoup eschew outdo sprue vnto askew outgrew redo strew halloo spew valuer zebu wazoo booboo regrew review avenue bamboo debut subdue untrue caribou jusqu overdue kangaroo revue shampoo sinew imbue overdo cockatoo bugaboo endue foreknew indue peekaboo buckaroo muumuu overshoe overgrew atishoo revenue hitherto overview residue withdrew retinue construe overthrew ballyhoo honeydew fondue marabou bestrew overflew prevue superglue overdrew interview rendezvous barbecue barbeque hullabaloo misconstrue