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.
lambier lamber limbier loamier lamer limber limier lumber limmer lumbar lemur
gambier limbier lambier wombier gemmier lumber comber gummier cumber gambir gammier lamber limier mimer chummier jammier hammier omber rimier rummier somber dumber timbery ambeer limber loamier amber foamier boomier ambery beamier bomber mbira gamier fumier ember homier umber camber member number rammier roomier seamier doomier timber chamber yummier mir
lambie lamb lamby lamia lamiae limbi flambe flambeau flambee lam