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.
hearsed harassed horsed heroized horste hirsute hoariest horst hurst
hearsed parsed reraised pursed prised perused greased braised nursed grassed cuirassed coursed rased rosed arced arrased raised cursed burseed erased farced phrased versed harassed horsed irised creased brassed praised prosed pursued chorused
hearsay hears hearse hers haars hairs harass hares harissa heirs heres heresy heros hoars hoarse hoers