Posted on 17th April 2015 by melyn Seythednek is the Cornish word for weekly Yes, weekly in Cornish is seythednek Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Strethurek is the Cornish word for structuralNext post: Iskaderyer is the Cornish word for vice-chairman