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.
retinues retines retenes retunes retinas retains ratines routines rutins reattains ruttiness reediness rootiness readiness redness rudeness ratanies redenies routinize rowdiness ruddiness redons ratans redans rottenness reddens rattans rattons rhytons rattens ratoons radians ratteens rattoons radons
retinues detinues giddiness reediness tineas cattiness battiness bawdiness tines patines ratines pottiness tenues knottiness beadiness mutinies betaines routines muddiness ruddiness meatiness seediness gaudiness detainees dottiness dowdiness tidiness wittiness chattiness shadiness matinees neediness iodines rootiness jettiness haughtiness fattiness headiness nuttiness poutines pettiness readiness nattiness retines mutinous bittiness mutines moodiness rowdiness matiness ruttiness codeines sootiness goutiness dienes dines doughtiness tattiness weediness woodiness chitinous shoddiness
retina retinae retine retinue ratine retain retene retune rutin cretin