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.
sloshes slashes slushes slouches slatches zilches celosias salchows silesias
goloshes sloshes galoshes cloches slushes plushes clashes slashes polishes plashes guilloches goulashes calashes lashes flushes relishes flashes bolshies blushes lushes leashes fleshes welshes
slosh sloshy slash slush slushy aslosh