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.
liriope larrup
liriope ripe rope trope tripe towrope pyrope hyperope grippe grope gripey gripe croupe cripe ropey troupe rip