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.
arrear airer ariary aurora aurorae airier
arrear rear drear quarrier brier soarer verier borer burrier farer marrer firer mirier corer freer wirer sharer lurer charier torero fearer urari carer burier tarrier beerier friar merer briar furrier bearer sheerer cheerer woorari wearer trier tearier dreary ourari searer dourer jeerer dearer surer pourer fuehrer querier eerier harrier rearer curari purer leerier parrier crier currier horary nearer sorrier hirer fierier parer fairer gorier varier roar learier aerier frier fuhrer hurrier moorier wrier carrier curara merrier marrier direr burrer airer courier frere barer hairier firrier roarer airier career aurar farrier ruer orrery hoarier poorer sorer hearer darer prier rarer drier curer terrier queerer truer tourer sourer warier wearier barrier wirier worrier tearer charrier cheerier serer shearer yarer
are area areae array arrow arrowy aurei