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