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.
shamos shammos shamois shamoys shams shamus shmoes shamas shawms shames chamois shammas shammes chams shims shammies chemos chamisa chamise chamiso chymous shmooze siamese chammies shimmies
camos shamos mos moss jumbos gummous famous moas vamose names gummose combos homos bimbos rimous comous miaous gombos memos hames moos ambos gambs jambs aims mimosa mows miaows romeos limos whams shmoes sumos shamus shamoys ramose shamois duomos shames chymous demos chams haymows lambs teams wames cymous tamis rams gams pams reams dames lams samosa loams mamas kames foams haems nomos bams amus maims amis cames moms cameos hommos tames hams rimose ammos amas mimeos beams camas awmous gamas iambs cams ramus lamas games shawms llamas jams pomos fames roams gumbos sambos cymose lames seams limbos dams comose shammos shams gaums tams ramous umbos wamus daimios chamois chemos dumbos shamas mambos yams
sham shame shammy shamoy cham chammy shawm shim shimmy shmo schmo schmoe