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.
hairdos hards hoards hardass hardies hurds herds hayrides harts haeredes hearts hordes heredes heriots hurdies hearties hurts
hairdos weirdos yairds weirds uredos girds weirdoes teredos birds fiords fordoes irids redos dorados credos lairds liards ordos parados parodos reredos cairds shairds yirds
hairdo hard haired hardy hared heard hired hoard