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.
griefs griffs griffes grieves gravies grievous gruffs graves groves grooves greaves garveys curfs kerfs curves carves graphs corves craves carafes corvees crevice curfews crevasse
briefs griefs roofies roughies arrives aerifies verifies horrifies rifs griffs purviews privies rarifies serfs derives tariffs torrefies trophies shereefs sherifs murphies rives riffs previews reives reifs reifies refs gravies reefs reviews kerfs purifies rarefies rereviews serifs drives terrifies torrifies sharifs sheriffs shrives
grief grieve greave griff griffe