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.
snottily snootily saintly snidely scintilla sinuately santol scintillae centile soundly sundial synodal cental sandal sendal
knottily nattily nuttily snottily nettly jauntily snootily daintily
snotty snot snoot snooty snout snouty