Posted on 7th January 2016 by melyn Diwweyth is the Cornish word for twice Yes, twice in Cornish is diwweyth Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Diskarga is the Cornish word for unloadNext post: Kudhys is the Cornish word for veiled