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