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.
tourist tourista touristy turista triste dourest durst tryst teariest trust torosity tarriest tryste trusty driest truest trustee torsade diarist drest dorsad tercet triced direst dearest tressed triacid trussed
aurist purist tourist jurist chariest teariest wariest querist tourista durst burst leeriest sorriest goriest wriest eeriest dourest cheeriest triste purest mooriest surest fieriest aeriest burriest hurst hairiest veriest firriest wiriest weariest merriest wrist wurst arista turista crista hoariest miriest leariest grist aorist airiest wristy touristy furriest charriest priest verist lyrist curst aristo barista sourest diarist driest tarriest beeriest christy
tories torsi tours stories stoures stours