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.
labelled labeled libelled labellate labelloid libeled lowballed lability labiality liability
belled labelled libelled rebelled gabelled bullied lowballed libeled labeled caballed billed bulled bolled bellied belied balled rebilled
label labella labile liable libel libelee libellee lobelia flabella glabella glabellae