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.
valved valvate velvet velvety vilified fluffed volvate vulvate
halved helved salved valved shelved solved calved delved wolfed levied deleaved velvet sleeved laved slaved believed salvoed glaived cleaved golfed relieved rolfed sleaved leaved gulfed lived relived malfed leveed selfed beloved gloved loved