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.
naggier nagger nigger nicker knacker knackery nacre necker knocker
baggier buggier wiggier piggier doggier quaggier saggier loggier foggier jiggier shaggier puggier leggier jaggier fuggier boggier vuggier naggier muggier faggier soggier leggiero gagger logger tagger lagger nigger digger dagger jigger tugger doggery hugger nagger buggery kegger bigger chugger piggery chigger bugger jaggery rugger jagger agger lugger egger mugger rigger waggery dogger bagger wagger fogger wiggery jogger hogger sagger toggery