Posted on 5th October 2016 by melyn Kesstyr is the Cornish word for synonymous Yes, synonymous in Cornish is kesstyr Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Sians is the Cornish word for notionNext post: ‘I don’t want to go to bed’ in Cornish is ‘Ny vynnav mos dhe weli’