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