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.
pursier purser pursuer prosier prissier pricer parser prizer proser praiser prisere presser pricier piercer pressor pressure preassure peruser
horsier pursier tarsier gorsier nurser grassier parser verser frowsier furzier prosier prizer coarser tressier raser bursera frizer cuirassier curser crosier courser pricer drossier ricer brassier corsair dorser peruser hoarser brassiere purser proser prissier eraser terser creasier greasier nursery riser rosier brasier pursuer dressier drowsier worser
purs pours puris purrs purse pursue pursy spurious spurs