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.
swears sawers sewars sewers sowars sowers seawares
wears rewears swears chawers jowars rowers tawers dewars sewars hewers sowers towers shewers pawers seawares ewers powers knowers mowers cowers sewers vowers sawers bewares wars dowers viewers bowers lowers wares wairs wheres weirs wooers gnawers sowars whereas teawares twiers chewers showers
swear sawer seaware sewar sewer sowar sower sware sweer