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.
sunnier sinner saner sneer senior seiner zanier sneery sunray sooner scenery snare snore sonar senor zoner senary senora synura senarii synurae
bonnier funnier punnier tinnier pannier cannier ginnier whinnier sunnier runnier finnier wennier fennier gunner inner sinner fanner nunnery tonier downier hennery cunner vanner canner panier tinner runner banner gunnery dinner dunner zanier teenier tannery bonier tonner meuniere winner rainier sheenier loonier shinnery tanner pinier goonier tenner manner punier denier tawnier tinier vinier linier cannery moonier punner penner ginner wanner panner phonier fawnier lanner conner pinner funner wanier weenier whinier winier wonner lunier shinier veinier shunner