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.
betaines beadiness butanes botanies betonies betons battiness bawdiness bittiness butenes beduins badness biotins botanise botanize bedouins batons battens bedunce boudins boutons buttons
betaines stains tidiness sootiness nattiness attains tineas meatiness muddiness dienes ratanies pottiness readiness battiness gaudiness giddiness retines reediness cattiness dines patins doughtiness shadiness weediness tattiness ruttiness headiness satins tines woodiness rootiness litanies tains zeatins mutinies detains nuttiness dittanies rowdiness matiness soutanes poutines reattains retains iodines codeines beadiness ratines pettiness bawdiness phytanes moodiness matins butanes bittiness knottiness seediness tetanies jettiness patines matinees goutiness routines detinues neediness detainees mutines stanes fattiness retinues dottiness wittiness botanies cetanes haughtiness ruddiness dowdiness titaness chattiness shoddiness