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.
snored snared sneered snort senorita sonority seniority
honored minored snored bannered unaired snared donnered gnarred knarred neared nereid aneared enured honoured inured mannered manured panniered pioneered sneered veneered tenured unread
snore senor senora snare sunray