Meaning

noun the feeling of distress and disbelief that you have when something bad happens accidentally

noun confusion characterized by lack of clarity

verb to cause someone to lose clear vision, especially from intense light

originFrom Middle English, back-formation from dazed. Compare Old Norse dasask (“to become weary”), with reflexive suffix -sk, Swedish dasa (“lie idly”), and Icelandic dasask (“to make weary with cold”). Also compare Proto-Germanic *dusāną, to slumber. Alternatively from Middle Dutch dasen (“act silly”).

Etymology from Wiktionary, CC BY-SA 3.0