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.
wheres whereas wherries whores wearies wires whirs weirs wears wares whirries whirrs wooers worries wars wairs warsaw
feres peres ceres heres wheres haeres meres quaeres seres ers res heresy aeries furies peeress fires bourrees fries corries lores boreas reis fairies gears cares eyries hares cries veeries juries lories heiress rues pareus roes pares piers mores vires ares ferries kiers kauries hears aureus dress ceros sauries quires dares ears wries pores faeries brews mares berries froes eros hurries verse crews peris dears kerries cures sieurs zeros pareos murries jerries durries rears trews tries tyres derries wares wears sores whereas dowries moires tories whores wooers dures chares cheers tears chirres terries chores shears sherries surreys shires tires shores years cores wherries sirrees tierce larees bores aures tres murreys carries sirees series areas gyres heirs cress coerce sarees press liers doers curries kyries mures buries seers sears pierce pyres bears perries hypers perse errs keirs ires purees ruers serries bares ores gurries fores barres leers cereus dries herries murres dairies gharries queers hers zaires preys peeries treys nares lures cooers curies queries caries pries tarries jeers viers heros braes bries veers beers phoresy harries verso fierce nereis peers grees byres goers marries gores pears hirees heroes grues lares rees vireos tarres brees presa sers cires eras lorries mires fares queuers trees xerus hires duress quarries parries hoers lehrs dearies drees eyres cowries paries soirees creese frees zeroes varies lyres biers caress prese fears seeress terse greys dories wires rares tress trues deers ureas diaries sires wearies weirs suers tiers whirries lears nears worries cheeros tares cherries terce choreas shares sheers prees shiers tores shoers shrews yores
wherry where wear weary weer weir were whir whirr whirry whore ewer