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.
hirsel hirsle hoarsely horsily
hirsel morsel dorsel carousel warsle carcel tiercel presell tercel marcel hoarsely crousely coarsely carrousel erosely hirsle bursal resell reseal parcel dorsal versal morosely tarsal tersely tressel wurzel
hairs heiress heirs hers hirees hires horse horsey horsy