Posted on 27th April 2015 by melyn Hweger is the Cornish word for mother-in-law Yes, mother-in-law in Cornish is hweger Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Sowdhenys is the Cornish word for bewilderedNext post: Gwia is the Cornish word for knit