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.
lariats laureates lards lairds liards lords
lariats rats curates narrates fruits carates crates writs writes greats frits gyrates rates cardias barites corridas iritis peritus ferrates verites variates riots norites grates derats worrits karates triads traits cerites hydrates drats pyrites deaerates ratos krauts serrates muriates rewrites riatas aerates frats prates korats grits fritts borates erratas heriots caritas gratis pirates veritas jurats merits giardias frites brits queridas brats cowrites burritos berates carats crits neuritis phorates curites rites orates groats bruits prats griots kraits karats cerates myriads sorites britts derates diorites yperites droits territs seriates treats urates ferrites chariots