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