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