Posted on 12th July 20177th January 2017 by melyn ‘I don’t know’ in Cornish is ‘Ny wonn!’ Yes, if you want to say ‘I don’t know’ in the Cornish language, it’s ‘Ny wonn!’. Photo by michael pollak Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Bleydh is the Cornish word for wolfNext post: Kelorn is the Cornish word for bucket