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.
would wold woald wooled wauled woolled weld wild wiled wield weald waled willed wailed wawled whaled walled whiled welled wieldy waylaid wheeled willied welladay welt wilt
mould should would could old fold soldi soled poult ruled gold holed poled aloud fooled woald cloud cloudy wooled hold cauld hauled voled fouled mauled moult shauled souled pooled tooled auld moldy gaoled shooled fauld miauled mold oldy loud build muled mouldy cold told coled bold guild puled sold soldo solid doled toled wauled wold cooled yauld
waul whole wholly wool woolie woolly wooly awol