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.
peris peeries perries peers piers prise pears paris puris pries perse peres priss peruse praise prissy paries pooris hypers pariahs pars purs parries pros peeress pours pross paras prize pares pricy proas praos presa pyres parrs praus prows pairs price purrs preys press pores prese prays prees pursy proso prosy pyros pareos pareus parous pierce porous pricey purees prez
peris ers auris hears lears verso parries biers herries goers quaeres berries eros briss veers orris haeres heres norias bears gears faeries hypers ruers hoers hurries paries ceres curios caries lehrs kauries lories meres reis perries souaris keirs ferias furies gharris ears varies hybris beers nears bries brios kerries wears rears sers cerise yttrias terais dories zeros wheres whirries tarries worries cheeros lorries cherries shears sherries shiers dries shris pries trios diaries queers fries peres queuers terse tories cris murries serais sears peeries saris dears derries series cowries jerries piers dairies suers priss cooers fears kris rise laris cerci naris frise curries queries carries aeries barrios leers sieurs corries hers peers gurries harries jeers arise rias morris rerise heirs arias errs iris houris bris arris cries viers juries eyries feres verse wries varias rais fairies nereis quarries buries veeries heros curies kyries loris liers eras marries pears terries tiers gharries kiers seers sauries ceros derris dearies deers seres kerrias noris perse zoris sris prise ferries tries paris wherries wearies puris serries cerias trois tears doers xerus weirs durries pooris wooers cheerios kauris cheers sharias sheers sherris dowries shoers years
peri per opera apery aper puri pier perry perea pereia pere peery peerie peer pear pariah speir