Posted on 26th July 2020 by melyn Nader is the Cornish word for adder Yes, adder in Cornish is nader Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Soled is the Cornish word for solidNext post: Bengorfoniethel is the Cornish word for gynaecological