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.
opuses opposes
pauses lupuses spouses puses opuses diapauses opposes repasses paseos lapises papooses poesies pases popsies pusses passes gypsies copses pisses gipsies bypasses apses appeases supposes reposes sepses upases speisses repossess poussies poses lipases possess pappooses peases biopsies apposes reopposes eposes repousses speises capiases posies pussies poises lapses puces posses peises deposes tapises woopses