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.
howdy hoody hod howdah howdie hoed hood hooty heady heydey heyday hoodie hoodoo houdah had hot hid hade haed head heed hide hied hoot hued
howdy rowdy dowdy soddy shadowy noddy wady moody toddy meadowy toady doody goody gowd hoody boody body bawdy towy today tody woody shoddy