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.
sneer sneery saner seiner sinner sooner sunnier scenery sonar snare snore senor zoner senary senior senora sunray synura zanier senarii synurae scenario
veneer sneer pioneer ruiner punnier keener anear canner mooner joinery vinier beanery gunner goner cannier fainer manner funner pinery ginnier joiner phonier loonier cunner pinner leaner banner punier biner genera nunnery miner loaner veinier vanner boner wanier shunner shinier toner sheenier winner tinner winery whinnier teener whiner weiner sneery weaner tonner zoner scenery runnier denier pawner sunnier tenner sinner tannery venery downer dunner honer dinero owner panner near bonier shiner hennery sooner tanner cannery dinner tinnier meaner teenier weenier loner tuner winier linear whinier finnier goonier conner coiner bonnier funnier inner gainer finery panier moonier fennier punner onery ginner deanery lunier rainier lanner fawner vinery finer pannier penner moaner vainer caner veiner pinier canoer gunnery fanner seiner fawnier shinnery runner saner linier liner zanier diner downier tawnier tinier tonier wanner wennier wiener wonner yawner
sane seen sene sine sinew sinewy sone syne esne usnea