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.
livier liver levier liever livery leavier lifer livre laver lever lover laveer leaver liefer louver leafier loafer louvre laugher
bouvier levier wavier livier jivier heavier vier savvier leavier wavery revere reefier lover miffier vera riviera rover puffier veer raver liever reiver paver reifier haver waiver jiver hover newwaver buffier caviar goofier siver shivery shaver chaffier whoever weaver vair devoir defier suaver louver aver sever fiver laver beefier fifer havior hoover riever huffier reaver never fiery fever laveer river aiver liver quivery heaver heifer iffier over lifer livery very every naiver leafier pavior beaver quiver ever revery leaver knifer knavery savior lever giver caver rifer mover riviere quaver cover severe saver soever daffier deifier diver waver quavery weever wiver chuffier shiver shover