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.
fetish fetich fattish faddish
fattish sottish rattish ruttish fetish latish wettish pettish loutish cattish hottish whitish goatish modish jadish reddish caddish toadish stich dishy maidish maddish laddish kiddish goodish loudish faddish radish stash dish potash tush dudish oddish fetich kaddish tosh widish