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.
gamays gamas gammas gambas gams gambias gambs gaums camas games goombays gummas gambes camass caeomas cams gums kames cames comas camos kumys koumys gumbos gombos commas camise camisa cameos cammies gummose gummous koumyss goombahs
mays gamays mas koumyss lemmas caeomas amas gammas gummas moas hyphemias camass embays mass maws mazy limbas lamas maes llamas lumas mambas mammas mommas nomas omasa pumas cymas simas summas zymase dumas shammas masa amahs amass amias somas zamias rumbas sambas pneumas pimas mammeys nemas mamas mameys limeys loumas lamias limas shamas doumas bimas kumys koumys bimahs goombays bemas gambas gamas commas comas camas homeys emmys biomass shamoys
gama gamay gam gamb gamba gambe gambia game gamey gamma gammy gamy gaum agama agma ogam