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.
sneakier snakier sneaker snacker snaggier sinker snicker snigger snooker snickery snuggerie sangar snugger sangaree sinecure snuggery
snakier sneakier chinkier wanker dinkier gennaker panickier finickier finnickier funkier hanker hinkier banker hunkier ranker canker knacker gunkier kinkier lanker lankier punkier snacker sneaker junkier inkier danker tanker wonkier chunkier
sneak sneaky snack snake snakey snaky sneck