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.
pussly pussley pusley piously passel pausal paisley posole psylla puzzle
pussly bassly sly tussle sassily dossel fossil rosily missal mousily fussily vassal pusley tassel wisely nosily mussily lousily hassel messily loessal gassily cosily hassle passel mislay measly byssal pussley loosely vessel easily busily bossily basely slay mussel queasily missel noisily paisley piously rassle wrassle dossal dossil tussal weasely cheesily
puss pussy pus pass passe passee pause piss posse poussie opus pups