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.
fer fear fere feuar fiery ferry feria faery fry fro faerie fur far feirie for fir feriae froe fora four fore faro very frow fire free frae fiar fair veer vier fury fray vera fare fairy veery firry foray furry farrow forwhy furrow gherao