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.
varas varias vars varus vairs varies various pharaohs fiars fares viers veers vires fairs verso frays frass faros vrows fears virus verse fraise vrouws pharos feuars ferias phrase forays vireos veeries gharris fairies faeries farrows gharries gheraoes pharisee firs furs
varas tiaras paras maras charas ras ars hears gaurs vairs hearse frass ferias hoarse gars mairs lares norias arrays laris arias naris guars serais koras proas arse nares braes crass maars liars mbiras mars harass lars bares parrs lairs durras hurrays bras knaurs bewrays boras praos moras cuirass fiars dares drays soras tares tears sears surras prase terras whereas pears urase wairs derays paris wars arras charrs sierras choreas hydrase sharias roars tars toras nairas douras pars sirras oars prays mares gnars saris murras braws trays hairs gerahs cares rears rares surahs deairs ears nears hurrahs airs hares bars carrs rias erase feuars fares kerrias fairs horas rase soars faros rais brays auras morass buras grass muras varus jars lauras grays shears wears morays boreas carse pairs hoorahs rays phrase fears raias lears forays hoars eyras haars boars gears areas suras hoorays liras coarse craws duras horahs eras raws frays pares marse ares brass cars gyrase vars sirrahs jarrahs varias pharos chairs bears knars draws shares terais torahs gnarrs tahrs dourahs saros hydras tarsi dears souaris praus parse trass yttrias ureas wares chares taros chars cerias years
vara var vair varia vary vera ovary