The word "stunned" describes a state of shock or disbelief, often resulting in someone being unable to react or respond for a moment. It typically refers to a feeling of amazement or surprise, as if one has been temporarily incapacitated by a sudden and overwhelming experience or revelation.
The term "stunned" originates from the Old English word "stuna," meaning to "make a noise" or "to be deafened." Over time, it evolved to describe not only a physical reaction but an emotional or psychological one when someone is overwhelmed or shocked.