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.
goombays goombahs coombs gambas gombos gamays coombes gambias gamas gambs comas combs gumbos combes combos gammas commas gambes koumys kombus gummas koumyss caeomas cumbias gums gams games gaums camas comes kumys camass comose comous koumis
goombays embays mays cumbias gamays gambas gambias goombahs limbas mambas rumbas sambas tomboys mas
goombah goombay coomb coombe gombo