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.
sleazy sleazo sleaze slays slice slews slaws slues seals soles salsa sloes sales selles selahs soleus sluice sluicy solace sallies scillas sillies sullies sailless soilless soulless
sleazy lazy lezzy glazy sleaze sleazo
sale seal selah slaw slay slew sloe slue sola sole solei isle