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.
surety soured syrette sort surd sired sered sored sorta sarode sortie seared soared sciurid seriate serrate serried sciuroid
ferrety surety ret curet arty parity great arete rete hearty hereto carroty rarity beret purity purty dirty tarty terret treaty turret whereat charity shirty party barret borty greet whereto treat tret dorty terete hereat verity ferity parroty warty garret cherty cruet caret variety pretty fretty fret forty ferret buret shorty
sure saree saury sere sire siree sore sour suer sura surah surra surrey usury