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.
gambias gambas gambs gamas gammas gamays gambes gams cumbias goombays games gaums goombahs camas camisa camass gummas gombos gumbos camise cammies caeomas cams gums camos kames combs cames comas coombs cameos kombus combes combos koumis commas kumiss commies coombes gummose gummous koumiss
gambias cumbias zombies sambas amias bimas embays hyphemias gambas goombahs goombays lambies lamias limbas mambas rumbas zamias zombis mas mis
gambia gamb cambia gamba gambe gam