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.
tressour tressure treasury treasure tressier dresser trouser trusser dressier terser tracer tarsier tracery derisory drossier dorser
tressour reassure reissuer preassure pressor pressure tressure
tressy tress tres trews tyres truss trues tries treys trass trees tores tires tares dressy dress stress