To dig something up from the ground or to discover something hidden or forgotten.
From Old English 'un-' (not, reverse) + 'earth' (the ground). The word literally meant to remove from the earth and evolved to mean discovering hidden things.
This word reveals how English speakers use physical actions as metaphors for mental discoveries—we 'dig up' information just like archaeologists unearth artifacts, showing how our language mirrors how our minds work.
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