Posted on 26th April 2013 by melyn Gwel is the Cornish word for leaven Yes, leaven in Cornish is gwel Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Pelyek is the Cornish word for sphericalNext post: Gohydh is the Cornish word for daughter-in-law