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.
auntly anodally anodal
auntly saintly quaintly faintly gauntly gently riantly jointly cental snottily mental pontil quintal connately cantal binately sinuately hantle daintily lintol neatly mantel finitely santol snootily soundly dental knottily until innately dentil nuttily rental fontal gentil cuneately nattily minutely gentle quantal nettly cantle lunately roundly jauntily lentil lintel pinnately pentyl pintle kindly fondly mantle wintle
aunt auntie aunty ant anatto anta antae ante anti