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.
truss torus tress trass trues torous tressy trousseau tres tars tors treys tarsi tears trows torso tyros trays torse tours trois trees terse torrs trios truce tores taros tires toros tyres torsi tiros troys tares dross tiers trews tries toras dress tahrs druse torose dressy terras drossy torahs tarres tories duress terais triose hydrous tarries terries yttrias dors drys
truss ruse brass porous pross press cerous pareus peeress morass seeress cirrous sorus grues dress kaross cruse druse grass hydrous aureus torus aurous tress cross varus briss chirus ferrous frass rues xerus gyrus peruse priss praus cereus nairus parous kurus cirrus ceruse serous gross gurus virus crus dross cuirass duress crass torous caress trass cress trues heiress urus harass chorus