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.
neatly nettly nattily natal nettle nudely nautili needily nodally nuttily knottily nidal nodal notal needle
featly neatly patly fatly sootily tidally retally dottily radially ruttily cattily ratel quietly tally badly boatel goutily medially wittily wetly dually dally daily hotly coitally fitly modally mutely knottily nettly nuttily lately meatal tattily fattily madly totally ratal doughtily fatally sadly outlay rattly meatily pettily nodally nattily vitally ritually tautly whitely deadly haughtily hiatal ideally caudally feudally meetly motley mutually natal cutely fatal chattily
neat net gnat gnatty knead natty nett netty newt anatto enate