Where does “*skwel-” come from?
*skwel- (Proto-Germanic) comes from Proto-Indo-European sḱel-, from Proto-Indo-European ḱelh₁- — to warm up, to be hot; to warm up, be hot.
*skwel- (Proto-Germanic) comes from Proto-Indo-European sḱel-, from Proto-Indo-European ḱelh₁- — to warm up, to be hot; to warm up, be hot.