So difficult or confusing to understand that it's impossible or nearly impossible to make sense of it.
From Latin 'in-' (not) plus 'comprehendere' (to grasp or understand). Built from the same root as 'comprehend' and 'apprehend.'
Some things like advanced quantum physics can seem incomprehensible at first, but brilliant scientists break them into understandable pieces—what seems impossible to understand today becomes tomorrow's common knowledge!
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