Relating to or characterized by loud protest or outcry against something; expressing vigorous objection.
From disclamation + -ory (suffix forming adjectives). See disclamation for root etymology. The -ory suffix indicates relation to or characteristic of the noun.
This adjective pair to the ultra-rare 'disclamation' is equally obscure, but it's a reminder that English once had more vocabulary for different *types* of loud speech—'declamatory' versus 'disclamatory' represented subtle distinctions that modern English has mostly collapsed.
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