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.
spiled speiled spieled spilled spoiled spalled spooled sepaled suppled speeled spelled spilt sepalled supplied sepiolite spoilt sepaloid spoliate spelt splat split
piled uppiled speiled spoiled spiled supplied hoppled replead cupeled appalled pulled appealed pooled puled pilled repolled reapplied repled tippled sepaled rappeled spalled peopled plied paled spieled spilled repealed spooled suppled sepalled nippled toppled dappled repelled rippled peeled cupelled palled pealed applied plead lapeled poled replied polled poppled coupled rappelled speeled spelled pled lapelled cupolaed wheepled
spile spill spail spale spall speil spell spiel splay spoil espial