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.
fair fairy fir far vair fare faro fire fiar fear faery feuar fiery firry farrow feirie faerie fro fer var fur fry for free vier fray fury four froe frae fora fere frow vara vary fore feria ferry foray furry varia vireo
air fair vair hair lair mair pair deair wair chair ar