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.
decor decry decare decker decree decury diker digger degree dogger dagger daiker dacker dicker dekare ducker docker duiker dickier doggery doggier duckier
decor cor coir core cory ecru mucor recur score scour decry chicory