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.
lupuses lapses lapises lipases lapsus
puses lupuses opuses lapses upases lapises diapauses copses supposes gypsies sepses gipsies reposes biopsies popsies lipases pases apses apposes pusses puces poses pauses opposes eposes reopposes repousses spouses deposes tapises woopses