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.
toner tonier tonner tuner tinner tenner tanner tinier teener downer tannery downier tawnier teenier tinnier donor diner tenor denier dinero dinner dunner tenour tenure deanery
boner toner sooner loner honer zoner mooner goner loaner onery banner genera keener near vinier venery phonier fanner canner miner ruiner fainer cannier ginner caner conner vanner anear downer pannier zanier veiner moaner deanery panier seiner inner veneer bonier dinner tenner shunner shinier sheenier winner winery whinnier whiner weiner weaner wanier tonner honor tinner tannery pioneer teener runner dunner penner hennery diner vainer linier goonier funner leaner saner veinier panner canoer finery ginnier gunnery vinery cunner scenery fawner denier manner bonnier loonier sneer downier gunner punier nunnery coiner fawnier finnier linear finer punner fennier punnier owner meaner biner liner lunier moonier lanner beanery rainier cannery donor sonar pinier runnier funnier pawner joinery sunnier pinner pinery dinero joiner gainer tanner sinner teenier tawnier tinier tinnier tonier tuner wanner weenier wennier whinier wiener winier wonner shiner shinnery yawner
toney tone ton stoney atony atone tune done donee tine tinea tonne tonneau tony townie towny toon tyne toonie atonia town stone townee stony