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.
midair mitier madeira moidore mitre mudra miter mater madre madder mudder maduro matter metier matier mature mattery meatier moodier muddier
midair dare moodier deair dear gaydar bawdier beadier dire seedier deodar cedar sudary dowdier rowdier weedier redear chadar radar cheddary nadir shadier lidar dairy faddier ruddier boudoir giddier hoodier gaudier headier feudary hetaira cedary deedier stair feodary deodara reedier tidier readier woodier needier cheddar muddier chuddar leadier shoddier
mid maid miaoued midday middy midi amid amide amido imid imide imido