Posted on 11th July 2018 by melyn Diwyethogeth is the Cornish word for bilinguialism Yes, bilinguialism in Cornish is diwyethogeth Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Arnowydh is the Cornish word for modernNext post: Gramasek is the Cornish word for grammatical