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.
metred metered mitred matured mitered motored mattered muttered meteorite meteoroid moderate maturity moderato
hatred metred mitred toured battered catered metered neutered tiered dreed guttered powdered puttered retread nattered tottered petered watered detoured tired teddered stared pattered stored teredo odored trued shuttered shattered chattered uttered tetrad dotard sutured steered reuttered retard foddered jittered teared chowdered trod bittered tread motored adored littered turd mattered tret mitered leotard hotrod treed matured redried dured bettered laddered fettered outread gettered juddered petard deaired tarred tried muttered tyred attired loitered retired tared buttered nitrid tarried trad lettered putrid featured ritard pottered stirred dread deterred storied dried doddered natured teetered starred cottered dared tutored waitered retried whittret chittered tattered chytrid shuddered tittered yattered
metro metre meatier meeter meteor meter metier mitre