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.
medias medius meds mediacy meeds midis meads metis meats medusa meatus middies middays muddies meadows maydays metisse medusae mods muds mids mads mats moieties mites meets modes mitis mates metes modus matts mauts mauds mitts motes moods maids moats mutes mateys matsah mattes mottes mutase metazoa mottoes
medias redias dis dies dais howdies gadis cuddies boodies houdahs medius codas diss daws paddies days naiads caddis goodies keddahs iodise paydays adios muddies middies qadis noddies tidies chuddahs dowdies widdies whidahs judas wadies todies heydays todays sadis radios foodies dits raitas daddies didies ladies soddies odahs rowdies maydays eddies biddies kiddies nadas giddies radius dadas badass cedis teddies bidis ditas wadis ideas toddies laddies bawdies howdahs fuddies dahs beedies hoodies gaudies audios codeias kadis woodies gaddis fiats pitas padis odas nudies neddies midis cadis bodies baddies caddies litas whydahs buddies readies middays roadies sodas dads doodies toadies waddies shoddies
media mediae medii med mead meadow meadowy meed midi modi