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.
unread unready unaired unroot
unread honoured veneered tenured snored snared panniered minored manured mannered inured inroad honored knarred gnarred enured bannered aneared nereid neared pioneered sneered donnered unaired unready