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.
mottoes mottos mottes motts motes mattes mots mates mitts moats moieties mutes mutts moods mites metes moots modes matts mateys muts meds mats mods mitis meets mauts metis meeds meads modus meats mutase medusa medius medias meatus matsah meadows medusae metisse middies muddies
ghettoes mottoes toes dittos tatties lattes patties dattos settees cutties putties pottos tutties catties jetties jutties mottos mattes hotties mottes lottos titties fyttes vetoes buttes battues ghettos suttees rottes puttees potties ottos butties lottes kitties fatties fouettes toeas ditties tates tattoos totes chitties