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.
lutist latest loudest leadiest lewdest latticed
autist quietist pietist lutist duettist chutist pottiest outsit odist peatiest headiest voodooist knottiest goutiest bittiest doughtiest sadist guttiest deist nittiest nettiest nudist featest outset dotiest detest test faddist bawdiest neatest fattest shittiest dadaist woodiest whitiest whatsit weediest tidiest tattooist mutest sootiest ruddiest reediest judoist matiest leadiest fattiest beadiest pettiest nattiest neediest coattest fideist doughiest gaudiest modiste battiest feudist faddiest batiste haughtiest footiest jettiest gnattiest cutest rootiest phattest zootiest dowdiest attest ruttiest retest midst cattiest muddiest latest poutiest hootiest outsat didst rattiest giddiest hottest moodiest deediest mitiest hoodiest nuttiest quietest fittest rowdiest tost tattiest dottiest tautest meatiest wattest wettest readiest whitest wittiest seediest chattiest shadiest shoddiest
louts luteous lutes lutz elutes fluidise fluidize fluids flutes glutes gluteus gluts klutz klutzy pluteus sluts