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