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.
reenter renter reentry reinter rentier reuniter ranter render runtier reindeer randier rounder
enter center renter tenter venter reenter render hunter fender niter counter linter noter fainter paintier ender santera jointer lender minter haunter cointer mounter entry saunter chunter chanter winter uniter tentier tender daunter sonneteer sentry jauntier mender centra runtier ranter pointier minuter banter gentry rentier neater montero punter hinter reentry santero reuniter lintier gender vender keynoter inter netter mentor entera bunter pointer painter lientery sinter canter reinter gaunter vaunter centre quainter neuter daintier sender taunter bender mintier tinter wanter wintery chaunter shunter
rent reendow rente brent greened preened rerent