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.
renature renter reenter reentry reinter rentier rondure reuniter render reindeer ranter
nature miniature renature denature antre venture geniture jointure ceinture centaurea santur denture
rent rente arnatto brent crenate grenade ornate