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.
tressed dressed trussed truest traced truced triced trustee tierced drowsed tarriest teariest terraced drest tryst trust direst dorsad triste tercet driest trusty tryste dearest dourest torsade tourist triacid turista
caressed dressed pressed tressed harassed trussed greased grassed cuirassed crossed cresset reseed brassed versed reseda reissued prissed creased grossed reused chorussed
tressy tress tres trews tyres truss trues tries treys trass trees tores tires tares dressy dress stress