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.
salvo salve saliva salvia solve slave sylva silva sulfo selva slieve silvae slough sleeve salify slavey sleave sylvae selloff sloughy self
salvo laevo levo valve halva halve calve salve
sal sail sale sall sallow sallowy sally saul seal