Posted on 14th March 2015 by melyn Diwvogalen is the Cornish word for diphthong Yes, diphthong in Cornish is diwvogalen Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Melodius is the Cornish word for melodiousNext post: Stummys is the Cornish word for twisted