To make someone very angry; to provoke to rage.
From prefix 'en-' (to put into) + 'rage' (violent anger). Created in Middle English to describe putting someone into a state of rage.
The prefix 'en-' is incredibly productive in English—it literally means 'to put into a state of,' so 'enrage' puts someone into rage, 'enlarge' puts something into a large state, 'enable' puts someone into an able state.
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