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.
goutier guttier gutter couter goiter guider guttery cottier gaudier gater cuter cutter guitar goitre quoter cotter gaiter coater cooter gaudery cautery couture quieter cattier quitter coterie cater gator coder kiter codder cottar gadder kidder quatre cattery
poutier goutier tier uteri whitier tattier titer zootier dottier sautoir souter reutter router hauteur puttier cattier muter matier gaudier shouter chattier jettier cutter cautery guider metier gnattier couter cuter neuter nutter outer pettier pottier guttier nattier mitier meatier mutter footier nittier battier bittier butter fattier knottier auteur cottier quoter pouter hootier haughtier nuttier peatier nettier dotier shittier wittier utter touter tauter doughtier suiter gutter sootier ruttier rootier rattier putter pitier shutter
gout gouty agouti agouty got gut