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.
reentry reenter renter reinter rentier ranter render runtier reindeer reuniter randier rounder
entry sentry gentry reentry gantry wintry gauntry tenter centre enter venter country center pantry renter centra monetary century lientery reenter wintery mentor chantry
rent reendow rente brent greened preened rerent