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.
offend
offend fend defend davened dovened refind effendi ravened livened leavened havened evened fund vend fond find fiend roughened deafened hyphened refund defund toughened