Posted on 3rd August 2017 by melyn Fest is the Cornish word for extremely Yes, extremely in Cornish is fest Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: ‘Black coffee please’ in Cornish is ‘Koffi du mar pleg’Next post: Dernigel is the Cornish word for fragmentary