I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
curtsy curtesy curtsey courtesy curets courts curates curites carts curds crits curettes courteous carats kurtas quirts cartes crates carets cruets quarts carates quartos caritas quartes creates croutes carrots cowrites cruds grots cards grits karts cords creds greats krauts grates korats karats griots guards crudes crowds gratis creeds greets cairds kraits grouts credos groats gourds quartz garrets gourdes grottos karates garotes cardias corridas corrodes crowdies garottes garrotes grottoes corodies corrades keiretsu queridas keratose
artsy curtsy borts parrots curtsey brats carrots quirts forts virtus hearts fortes carts brits merits bruts berets prats courts boarts barrets girts pierrots frats trets shorts frets cherts worts tarts whorts turrets derats tortes garrets kurtas territs nerts drats karts quartos curets sorts grots verts carats farts harts ruts airts vertus ports carets writs marts rots rets parts courtesy crits hurts quarts rats burets cartes orts ferrets fortis jurats curtesy korats grits certes frits quartes karats dirts morts terrets arts torts tortas darts trots warts tarots worrits charts aortas shirts yurts
curt cured kurta curried curred curite curette curet curdy cart curd curate crit crate court carte scurried