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.
feuars fears furs fairs fours faros fiars feres fares ferias furioso faeries farrows furrows furious ferries ferrous vars firs ferreous veers farci frays farce verso varus vairs furzy frees fires varas froes frows frass viers farcy fores fries verse forays farcie varias fierce pharos furies varies frowsy foresee veeries gharris fairies foresaw various gharries gheraoes pharaohs pharisee
guars feuars ars giaours paras mairs lauras bears hearse tours fiars hares furs hours burrs bourse boars marse vairs pursy wares burs taros dears buhrs duros sieurs hoarse churrs cares suers ruers pars laris puris nurse charas haars rears years purs charrs tarsi tahrs duras dares saros mares shears urus pears paris ours naris knars wears souaris mures fears lairs kauris faros liars burse fares euros kurus cars coarse cures curs gars vars lures knurs gnarrs varus pharos mars nares currs hears gurus varas ares lears bursa fours kouros queuers bares muras course parrs arse purrs ears hairs gears hoars bars lars oars fairs curse maars auris airs gaurs lares houris maras carse aures rares pours buras nears durrs pairs jars parse saris pares auras gnars sours carrs deairs lours knaurs sears roars murrs tars dures tears tares suras chairs wars douras soars ursa purse chares chars shares wairs tiaras yours