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