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.
gushiness cushiness gaucheness cushions cochins kachinas katchinas
achiness fishiness cushiness touchiness patchiness ashiness itchiness bitchiness washiness mushiness pushiness bushiness tetchiness gushiness chaines shines reshines butchness richness machines lushness shyness muchness poshness chines gaucheness rashness suchness shoeshines