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