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