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.
rottes rotes routes rots riots roots routs rates rites rotas rotis rodes rotos reties writes redoes rodeos rowdies roadeos riotous roadies rets reds rats rods ruts redes roods rides redos redds reads roads reeds ratos writs reatas redias retuse riatas radios raitas readds readies
buttes mattes mottes lottes rottes lattes fouettes fyttes cuties fatties lutes jetties cates butes votes quotes bytes bootees bawties bates catties goatees netts hates lyttas nates mitts battues cutesy booties rites patties mottos notes jetes cotes mutts mates vetoes mites hotties gates buteos tatties tots ditties sites dotes tates tets whiteys tuts dauties tuttis wites chotts shotes dates shutes deities titties sates watts toes butts poetess botts putties jutes bitts suttas writes ottos bettas mateys pottos cutties cites mottoes laities ghettos moieties motts tees ates puttees fetes putts batts motes footies kytes ties lottos sties gaieties nites kitties jutties cutes teas fates matts reties butties gites coatees kites mutes bites boites cottas rotes cooties settees pities tats rates suites metes pates ghettoes pittas beauties wytes routes utes sautes stews potties pieties cetes tews cuteys cities totes tutees dites setts dittos duties teds whites dattos tits tutties whities chitties chutes suttees shotts dawties yetts
rotte rot protei grotty ratty riot root rooty rota rote roti roto rout route rutty wrote grot grotto protea trot