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.
primer primero primmer premier primary premiere paramour
rimer lorimer trimer primer wormer farmer grimier premiere rammer creamer reamer krimmer rimmer rimier rhymer crammer charmer rammier former creamery crimmer crumbier ormer primero dormer dreamier termer trimmer harmer crummier grummer germier groomer armer creamier rummer rummier firmer broomier framer roomer wormier primmer warmer brimmer drummer grimmer roomier roamer premier barmier crumber dreamer chromier
prim prima prime primi primo perm pram premie prom promo