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.
gonadal gonadial gonidial conidial conoidal condole condyle gondola quinoidal connately candle cantal kindle kindly cantala gauntly quantal quintal
monadal gonadal natal nidal nodal anodal vandal gonadial mandala neonatal poundal sandal sendal sundial synodal