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.
measle measly masala mycele muesli mislie missile messily mesally micelle micellae mislay micell missal missel mussel mizzle mazily muzzle micella misally mousily mussily mycelia mausolea
measle sale rassle pusley paisley measly missile isle hassle vasal lisle fusile fissile deasil scissile teazle rissole tussle resile easel basal basil resole resale pussley posole mislie nasal sloe slue slew sole aisle azalea teasel sessile tousle wrassle weasel
mas maes mems amass masa mass massa masse massy maws mays mesa mess messiah messy mews moas amas emes omasa