Definition of mind-boggling adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈmaɪnd bɒɡlɪŋ//
; NAmE NAmE//ˈmaɪnd bɑːɡlɪŋ//
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very difficult to imagine or to understand; extremely surprising a problem of mind-boggling complexity It’s mind-boggling to me that this is allowed to happen. compare boggle More Like This Descriptive compound adjectives with parts of the body back-breaking, ear-splitting, eye-popping, gut-wrenching, hair-raising, lung-busting, jaw-dropping, mind-boggling, nail-biting, rib-tickling, side-splitting, spine-chilling, stomach-churning, toe-curlingSee worksheet.
See the Oxford Advanced American Dictionary entry: mind-boggling