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.
lapises lapses lapsus lipases lupuses
lapises tapises supposes puses deposes spices speises reposes opposes poses lipases apses coppices pisos pisses poises upases popsies speisses apices copses apposes biopsies eposes gipsies gypsies capiases capizes pases lapses lupuses opuses reopposes sepses peises woopses
lapis laps lapse leaps elapse flaps claps slaps