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.
ylems lemmas lums lams lamas lames limbs loams lambs lumas limos limes looms limas lamias limbas limbos limbus llamas loumas lambies
ylems ems femes emus emes bemas beams memos neums neems reams seams semes deems demos teems fems hemes haems hems gems geums lams lums memes mems nemas poems rems seems semis demes teams chemos