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.
clots cloots clouts clods colts cults calottes culottes culets clouds gloats cultus cleats glouts galiots galoots cullets glottis colitis collets callets collates colloids galliots galloots colds clads kilts kelts gluts gaults clades quilts caulds glutes gleets guilts gallets coleads keloids gullets gluteus kilties colludes galateas galettes gallates galletas quillets collides claddaghs qualities
allots slots blots lots pilots helots clots maillots reallots shallots plots ballots zealots alts pallets vaults gaults clods blats holts flits flouts pullouts flotas cults ballets lilts piolets voltes jilts melts blets lits felts guilts pelotas belts jolts lotos kelts mallets cloots salts gullets rillets wilts welts toilets tallits dildos deltas quillets lotas slats sellouts milts moults celts billets relets hilts clouts plats bullets cultus loots owlets colts poults gluts floats kilts malts lats galoots altos pellets galloots volts pelts filets allods bolts fillets mullets gloats collets plods galiots gilts cullets bailouts galliots flats sluts fallouts faults valets callets violets rialtos gallets lets howlets louts culets millets glouts halts palets molts bloats quilts lotus gelts pullets chalets plotz rollouts sallets saults silts slits zlotys delts dolts tilts wallets willets sheltas
clot clotty calotte clod cloddy cloot cloud cloudy clout colt culotte cult culti