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.
taenias tenias tenuis tennis tens tans tennies tawnies teens tunas tansy tense tains tenues danios tauons tenace teensy tineas denies tawneys tenuous toonies duennas tunnies tannoys townies tins tuns dens tons dans tones dense tunes towns denes donas tonus toons tines deans dawns tynes dienes donnas tonnes dueness townees
xenias taenias tenias hyaenas wienies weenies tennis penis lenis hyponoias veenas hennas genies genius genoas bennis duennas denies faenas pennis scenas sennas siennas zinnias manias tenuis whenas sheenies hyenas ens
taenia taeniae tenia teniae tan ten