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.
biennial biennially biennale binal biannual biannually bonnily banal banally
biennial annal tinnily xenial pinnal anneal annual biannual biennale bonnily finial funnily venial genial cannily hymenial menial penial sunnily denial unnail nil
biennia benne benni benny ben bin