Posted on 1st March 2019 by melyn Trayson is the Cornish word for treason Yes, treason in Cornish is trayson Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Diskler is the Cornish word for indistinctNext post: Kolmek is the Cornish word for knotty