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.
centas cents centos scents cenotes scends senates sonatas sennets sennits zenaidas sienites snits snots sends scientize saints santos snoots snouts suints sonnets
antas quintas yentas pintas mantas juntas centas pinatas cants haunts hants cantos cunts bionts aunts hondas haints hents bents linnets paints knots manats gentes joints hunts kentes punnets bannets pants punts fonts gonads kainits quinnats pints maenads anatase hints bonnets sennets qanats shantis chiantis chants wants tints tenets taunts dunts donuts dents suints sonatas snits santos bunts lentos vaunts cantus contes nonets montes counts points rents lunts phantasy rennets mantes faints cents antis quints quintes fantasy gents pontes feints quants antes gannets rants mints jaunts lunets mantuas vandas pintos genets mantis juntos nuts vents founts jennets gnats contos bandas menads mounts ants bints giants knits pinots runts pantos lints pandas peanuts bentos binits pointes nits intis puntos bennets nets rentes bonitas antsy centos monads saints scents sennits snots sonnets daunts dints doughnuts taints teentsy tents units wonts chaunts chints shunts yentes
cent centai cento centu cenote scend scent sent sente senti