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.
skewness skenes skeanes sickness skeans skeens skeins sickens skins sogginess scones segnos sequins signees sequence squinnies scans signs
skewness coyness kookiness quickness gooeyness keenness cockiness bigness bogginess bagginess pugginess sickness sogginess pigginess tackiness pawkiness weakness mugginess chicness luckiness shakiness legginess gayness vagueness rockiness gawkiness quakiness jokiness geekiness cakiness hokiness hokeyness ickiness pokiness bugginess fogginess pickiness deaconess packness wackiness meekness cheekiness likeness shagginess leakiness yuckiness
skean skeane skeen skein skene