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.
sunns sunnas suns sunnahs sennas saunas sonnies sans siennas sins sons sains sinus sensa sinhs snows snaws sonsy sense sines sones sanes sinews sensei hysons scenas sonsie sanies scenes seines sansei scions sanious sawneys sinuous zinnias zins
bunns sunns uns linns banns lunes huns jinnis funs fauns hennas muons pannes faunas nouns sunnas pinnas shuns conns ruins quins runs guans sennas joannes suns duennas duns tennis tunas tuns goannas puns jinns runes saunas bennis bonnes bennes nans pennis muns nuns annas mannas rouens wynns guns lauans munis siennas cannas bunas buns donnas dunes tauons tonnes tunes lunas punas inns yuans
sunn sunna sunnah sunny sun sauna senna sonny