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declamatory (adj.)

"of or characteristic of a declamation," 1580s, from Latin declamatorius "pertaining to the practice of speaking," from declamatus, past participle of declamare "to practice public speaking, to bluster," from de-, here probably an intensive prefix (see de-) + clamare "to cry, shout" (from PIE root *kele- (2) "to shout").