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