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.
smiled smelled symboled samlet symbolled simulate smalt smelt smolt smalti smalto
moiled remailed emailed camailed mailed smiled mumbled gamboled humbled bumbled malled pommelled symbolled umbeled mild gimbaled smelled jumbled gimballed umbelled wimbled ambled wambled mulled fumbled gambolled pommeled gambled milled pummelled melled symboled tumbled pummeled rumbled rambled mewled mauled muled miauled shambled
smiley smile samiel simile small smell smelly