'mind-boggling' definitions:

Definition of 'mind-boggling'

From: WordNet
adjective
Intellectually or emotionally overwhelming; "a mind- boggling display"; "a mind-boggling puzzle"

Definition of 'mind-boggling'

From: GCIDE
  • mind-boggling \mind-boggling\ adj. intellectually or emotionally overwhelming; straining one's capacity to comprehend or cope; as, a mind-boggling display; a mind-boggling puzzle. [WordNet 1.5]