What is gobsmacked?

"Gobsmacked" is an informal British expression used to describe a state of being utterly astonished or amazed. The term likely originates from two components: "gob," which is a slang term for mouth in British English, and "smacked," meaning to hit or strike. The idea is metaphorically akin to being so surprised that it's as if you've been hit in the mouth, leaving you speechless or wide open in amazement. It's often used to convey a reaction to unexpected news, events, or revelations that are shocking or surprisingly impressive.