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.
slaver slavery salver silver sliver solver silvery salvor salivary sleigher sloughier sulfur sulfury sulphur sulphury
laver palaver cleaver claver slaver leaver liever livery lover allover loafer boilover slavery believer delivery flivver livier clover flavor sliver deliver delver shelver solver wolver culver elver lever clever liver clovery laveer glover silver levier clavier reliever salver silvery pullover leavier louver plover rollover shelvier
slave slavey salve salvia salvo selva silva silvae sleave solve sylva sylvae