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.
baddy buddy bawdy biddy beady bad baddie baud bawd bade body bead bawty boody baaed batty beauty bed bat bud bod bid baht bate batt bedu beta bide bidi boat bode bait beat bota byte
baddy caddy paddy daddy waddy faddy add ready duddy toddy didy soddy biddy neddy gaudy lady toady midday middy gaddi shady teddy widdy fuddy wady readd giddy kiddy beady heady buddy muddy cuddy leady eddy bawdy ruddy noddy shoddy