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.
sitar star stare stair starry suitor sitter suiter satara stir stour strow store sutra satyr stria citer strew story stere stroy steer stray straw siddur souter setter seater stereo stoure storey strawy sadder satire stoury sudary striae suture sautoir seedier sootier sudaria hysteria sautoire
guitar sitar tar dietary titer stare suitor notary nitre stair citer cottar writer wheatear satara retear mitre gaiter loiter liter kiter goitre goiter tuatara biter votary taro rotary tahr litre baiter ottar nitro niter miter tear lidar tare attar diary star suiter datary tatar titre waiter whiter
sit satay seta setae site staw stay stoa stoae stoai suit suite