Extremely large in size, amount, or degree.
From Latin *enormis* ('irregular, abnormal'), from *e-* ('out of') + *norma* ('rule, pattern'). It originally meant 'outside the norm' before shifting to 'very large.'
Enormous used to mean 'out of line' rather than 'huge.' Our brains naturally treat very big things as abnormal, so the jump from 'against the rules' to 'massive' makes psychological sense.
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