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.
medius medias medusa meds medusae modus meads metis midis meeds meatus middies muddies mediacy metisse meadows mads muts mids mods muds moieties mites mitts mates meets mauds mutes metes motes modes maids mauts mitis meats moods mutts mateys mattes mottes maydays middays mottoes
medius radius dis situs boodies medusa roadies coitus medias bawdies cedis teddies wadis readies toddies gaudies iodous dits eddies fuddies bodies bidis audios woodies waddies tidies dowdies daddies iodise kudus adieus caddis laddies midis beedies kadis muddies nidus nodous nudies paddies radios giddies biddies gaddis soddies cadis adios diss dues vodous cuddies howdies buddies hoodies dies didies foodies gadis ladies baddies goodies caddies redias dais rowdies qadis duos odious sadis neddies noddies kiddies middies padis nodus duds tedious toadies modus todies wadies doodies widdies shoddies
media mediae medii med mead meadow meadowy meed midi modi