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.
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cruds hurds hards frauds weirds prods cards boards bruts hybrids purdas grads hoards gourdes guards birds virtus fiords lords brads merdes beards shairds yards sherds chards wards nurds farads pards nards lards shrouds turds burds sarods jerrids sords creds druids reds girds jerids rads curds marauds fords hairdos bards lairds gourds hordes grids rids irids rudds bardes cords prudes words vertus herds ruts sards murids liards hydrids crudes surds cairds sciurids rods urds yairds nerds shards perdus fards ordos weirdos chords shreds yirds
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