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.
locater locator locutory lactary lecture legator ligature lector lictor
locater cater coater cuter gaiter gater acuter locator negater ciguatera scatter scoter secateur skater squatter dictier