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.
perse peruse prase peris peres peers prise prose purse parse piers pears prese porose pursue pierce praise hypers pros pars peeress peeries purs perries paras parrs proas pairs praos puris preys pyres prees pares pries purrs pross presa paris prows pursy press pours pyros pores praus prays proso prosy priss paries pooris purees pareos prissy porous pareus parous pariahs parries prez
verse perse terse ers carse gyrase phrase grease fierce burse heres bears haeres eros morse erase verso prise hers biers kersey cruse quaeres cirrose errs zeros deers druse goers sers rears frise ceres piers corse jeers leers eras ceros shoers beers queuers tiers torse liers urease seers wears wheres worse purse cheers sheers meres coerce parse fears hearse brose suers tears peers crease hoers peris horsey prase peruse veers rerose birse lears arise ruse reuse heros viers kiers keirs course morose hears peres arse bourse lehrs creese hoarse queers pursue curse arose cooers rise coarse gorse rose nurse jersey rase heirs bursae nears ears feres erose gyrose resew porose doers resee xerus pears gears prose marse foresee sears hypers cerise horse rerise ruers prese pierce urase shiers terce ceruse tierce torose seres hydrase sieurs ursae weirs wooers dears cheeros shears years
per pear peer peerie peery pere perea pereia peri perry pier aper apery opera