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.
timbale timbal tamale tombal tumble tymbal tambala tamal tomalley timely tombola tombolo dimly domal dumbly tamely
timbale male chimbley wamble tumble maile cembalo rumble nimble mumble gumball gamble cambial jumble gimbal jumbal sambal humble fimble female bumble amble ramble cembali cymbal tamale timbal fumble tambala tombal tymbal wimble shamble