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.
reappears rappers reapers wrappers rapers rapparees rapiers rippers ropers repros reappraise repairs repours repress repursue roperies reprice reprise
coappears appears reappears pears suppers sippers coppers wrappers peppers nippers cuppers copperas knappers lappers mappers lippers kippers zippers tappers toppers whappers whoppers choppers shoppers quippers gippers cappers sappers boppers hoppers loppers gyppers moppers nappers pipers spears rappers rippers poppers papers zappers dippers tippers uppers whippers chippers shippers yappers pars
reappear rapper reaper wrapper crapper trapper