Posted on 13th May 2012 by melyn Deuv is the Cornish word for son-in-law Yes, son-in-law in Cornish is deuv Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Enyshes is the Cornish word for isolatedNext post: Plesont is the Cornish word for pleasant