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.
lessor lesser lassoer leaser leisure lacer laser loser lacier lazier looser lousier
lessor tussor scissor cusser tussore dosser soar tusser tosser suasory sora lesser lassoer kisser guesser gasser hussar seisor voussoir tussar fusser sour sori sore hisser passer pissoir visor pisser mosser tussur
lessee less les lies bless leys lyssa leis lossy loss loess lease lees leas lasso lassie lassi lass lues ales oles