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.
sizes seizes sices sises saices seises sisses cissies sassies sissies syces ceases sasses sauces souses susses sycees seesaws
bizes baizes phizes wizes maizes seizes sizes fices missies mises ices bices feezes fuzes zees sassies poesies voices cozes fezzes razees resize poises ghazies fizzes bises size baizas raises lezzies heezes easies daises chaises wizzes wises wheezes tassies doozies disseizee dioecies deices dassies sissies gazes sices posies saices cozies rises laicize mezes fazes seize fuzees lazes juices liaises guises fezes vises pussies feazes bossies seises hissies assize poussies buzzes boozes hazes jazzes noises fuzzes gussies cozeys lazies reseize peises razzes lezzes lassies quizzes hoises newsies kneesies vices hussies rices sises facies mazes bizzes gauzes cosies razes busies cozzes oozes daisies dazes dices disseize dizzies dozes tizzies whizzes cissies wussies choices
sizes size seize sice sizy bizes seizes sices sises wizes