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.
eraser erasure
raser eraser creaser greaser riser dorser hydrosere purser dressier prisere pursuer parser tressier grosser praiser raiser nurser horsier racer razer drossier trusser terser reissuer creasier carouser rosery crasser coarser rouser proser verser crosser cuirassier curser grassier hoarser caresser rooser foreseer prosier greasier browser nursery grazer presser curiouser grouser drowsier xerosere peruser drosera prissier tarsier pursier gorsier trouser courser cruiser friseur bracer brasier brassier brazer arouser frowsier tracer harasser rosier crosier bursera bruiser dresser worser
eras erase ers ears eros erose errs eyras