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.
astray asteria aster astir austere azoturia aciduria
astray stray estray mastery wastery lustra destroy gastrea rostra jesuitry pastry history osetra vestry stroy sutra stria strawy straw story satara mystery ossetra ristra sistra tessitura wastry