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.
clivia clavi colluvia calif calve clave cliff clove caliph cleave cliffy glaive coalify
bolivia clivia alluvia eluvia illuvia colluvia rilievi saliva salvia silva diluvia