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.
weensy weens wheens wens weenies weans whens whenas woeness wienies waeness wons wans wins wains winos wines wanes whins whence whines wincey winoes wanness winnows whinnies
weensy teensy ens sense foehns linsey lenos lenes peans benes miens kenos paeons hyaenas rouens veenas donsy mense lense scenes penis gainsay queans faenas yeans whens peins weans peons uneasy tens venus cense teens hygienes fens dense hens zeins hyphens denes veins means quinsy wheens jeans newsy leans paeans tansy beans gens nosy queens eons kens deans sonsy pens aeons nenes penes lenis scenas genus keens hymens menus pansy mensa reins liens dens wrens sensa lens tense neons peens unsay weens bens wens genes whenas sheens dienes hyenas yens
ween weenie weeny wen wean wenny wheen when wienie sweeney sweeny tween tweeny