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.
medical medically metical meiotically
medical radical nodical stoical decal ducal tical biotical vatical viatical metical nudicaul pedicle pedocal poetical radicle nautical zodiacal