Here's what rhymes with taptoo.
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 bamboo lieu shew su sue vous fu lu rue stew taboo zoo adieu ado brew hu ku loo mu nu pew seu shu sou tattoo vu woo yew yu coo cou ewe feu gu outdo 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 clue cue glue hue queue undue cu debut flue slew subdue undo flu jusqu piu thru beaucoup eschew fue hew mieux shampoo shrew sprue vnto vue clew mew redo strew spew bugaboo zebu slue phew achoo screw avenue canoe renew accrue ensue untrue overdue skew imbue outgrew overdo ballyhoo cockatoo halloo honeydew valuer endue indue kazoo peekaboo bestrew buckaroo wazoo atishoo review hitherto residue withdrew rendezvous retinue caribou barbecue kangaroo revue sinew askew barbeque fondue foreknew marabou muumuu overshoe prevue overdrew regrew interview revenue overview construe overthrew hullabaloo overflew superglue overgrew misconstrue