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.
satrapy satrap strappy strap stripy stroppy stirp strep strip strop stripe stirrup
satrapy trap drapey rattrap satrap strap strappy stripy
satara satire satori satyr straw strawy stray stria striae sutra astray estray