mind-boggling
UK: ˈmaɪndˌbɒɡ.lɪŋ | US: ˈmaɪndˌbɑː.ɡlɪŋ
adj. extremely surprising or overwhelming; difficult to comprehend or imagine
The term combines "mind," from Old English gemynd (memory, thought), with "boggling," derived from "boggle" (to hesitate or be startled, likely from Middle English bugge, meaning a specter or frightening object). "Boggling" evolved to describe something so astonishing it overwhelms the mind. The compound "mind-boggling" emerged in the mid-20th century to emphasize extreme mental overwhelm, often in contexts like technology or scale.
The complexity of quantum physics is truly mind-boggling.
She faced a mind-boggling amount of paperwork after the merger.
The museum’s collection spans mind-boggling historical eras.
His sudden wealth was a mind-boggling change in fortune.
The speed of AI advancement is mind-boggling to researchers.