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.
nautilus nodulous netless nettles nodules knotless nodulose noteless
nautilus tils stylus stiles retiles retails rattails motiles modiolus coattails battailous cattails tolus toils tills tiles talus tails rutiles stills details
nautili nattily nuttily inutile