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.
decide deicide deciduae decidua deuced diacid deiced deceit dacite dayside dazed dosed diced deist dozed disced dissed dossed doused dowsed daisied dizzied
biocide decide suicide deicide lucid diacid seaside dacite leucite secede residue recite hypoacid mucid miscite lucite reside quayside viscid aside acidy acid side cite muscid recede beside dayside azide cede wayside