The act or state of being greatly agitated, shaken, or disturbed; violent commotion or disturbance.
From exagitate plus -tion (Latin -tio, the standard nominalization suffix). The noun form describes the action or resulting state of the verb.
Medieval physicians described patients with 'exagitation of the humours' when they thought violent emotions or illnesses were causing physical upheaval—it's a beautifully dramatic way to describe being really upset or physically shaken.
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