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