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.
merinos mirins merriness marinas murines marines mureins morions moraines miriness marranos morns morrions murrains morons mourns maroons marrons moreens moreness
merinos rins brines rains brains ruins ruinous rinse groins reins jarinas carinas grains bruins morions murrains mureins prions purines sarins sciurines serines serranos drains durions terrains trains trines urines urinous chorions parians brins burnous pornos farinose virions heroins journos carrions grins farinas marinas marranos burins marines mirins morrions neurines murines pruinose purins saurians sereins serins dourines durians taurines terrines triens turions urinose chorines shrines
merino marina marine mirin murine