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.
ferities ferrites verities frites verites forties frits ferrates fortes fritts fortis fruits varieties veritas ferrets variates frats verts forts fritz farts frets vertus fretsaw fordoes virtues foredoes phorates fards fords farads fiords frauds virtus
ferities rarities charities parities purities verities forties pyrites rites cerites neuritis muriates variates reties iritis pretties cowrites parties sureties dirties ferrites verites varieties norites barites curites yperites writes rewrites frites seriates hearties sorties diorites treaties sorites shorties
ferity frit ferried ferrite fritt fruit fruity verite verity afrit