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.
varsity veracity voracity verst verset frosty verist verste fairest farside veriest frowsty feracity virusoid ferocity first frost forest freest frowst versed
varsity porosity trusty touristy torosity serosity pursuit prosit morosity resit curiosity crusty cariosity frosty wristy rusty christy
vars vairs varas varias varies various varus avarice ovaries