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.
leaven levin liven
haven leaven maven shaven daven raven heaven woven faena devein even pavin savin coven riven vena pavan ravin novena roven oven seven vein deafen mavin doven given liven
leave leavy lav lev leafy slavey leva cleave laevo lava lave leaf levee lieve clave clavi levo slave levy sleave