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.
umbles umbels umbilici
ambles rambles jumbles wimbles tumbles humbles fimbles numbles bumbles nombles wambles gambles rumbles umbles mumbles fumbles shambles timbals gemmules aimless amoles males mooleys mailless limbless moles mulleys mules rimless families tameless jumbals muleys ramillies molies gambols embolies gumless foamless nameless muhlies homeless timeless melees mealless seamless tymbals umbels tamales symbols ramilies miles similes females loamless mollies homilies timbales cymbals ramblas tombless beamless mallees malleus milles chimblies rhymeless smiles sambals mealies smileys limeless tomalleys fumeless fameless sumless chimbleys gimbals chimleys mailes shameless