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.
rearm
rearm arm warm dreamy derma serum larum berm perm karma cream germy army arum barm barmy ream creamy bream farm fermi harem harm herm herma germ carom berme derm dream term charm
rear rearer wearer urare tearer dreary drear dearer searer roarer learier nearer hearer frere fearer bearer ruer roar tearier urari wearier