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.
degauss degas teguas daggas decays dogs tegs daks digs dugs dags dekes dagos teggs dawks decks dikes dukes decos dykes teaks ducks togas dagoes decoys dekkos taigas dickeys dickies doggies duckies
gauss degauss gassy guess gussy bagass bagasse megass megasse gas