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.
snots snouts snoots snits scents snoods synods suints saints santos sonatas cenotes sonnets sennits senates sennets sanities sienites sinuates sanitise sands sends sneds cents scends sondes sounds sundaes sundews sanitize scientize sonnetize
knots snots pinots points quants kendos nits hunts notes hents antes manats vents pantos hants genets binits gnats punts counts nets bunts linnets montes keynotes bionts bentos feints snits joints gents nonets rentes nods mints runts pints bannets denotes shantis chants wants jaunts tondos teentsy punnets tents synods centas doughnuts dints rondos yentas chiantis mantes peanuts sonnets santos sennets cants cents knouts rants gannets taints pintas contes lunets quints knits quintas bonnets quintes condos lentos dents kainits dunts fonts bints gentes tenets connotes cunts bents mounts lunts paints pants suints haunts contos hints cantos runouts ants jennets vaunts kentes antas nuts giants lints antsy bennets juntos nowts units shunts pontes faints cantus antis rennets aunts rainouts juntas cenotes chaunts intis mantis quinnats mondos founts qanats haints rents wonts centos pointes tints taunts donuts daunts snouts chints pintos snoots mantas sennits scents puntos saints yentes
snot snotty santo sent sente senti snit snood snoot snooty snout snouty synod