the.com/declamation

means A formal, impassioned speech delivered for effect — or, in school settings, the exercise of reciting one for practice.

from From Latin declamare, 'to shout out' or 'to practice speaking loudly' — built from de- (intensifying) plus clamare, 'to cry out' or 'shout' (the same root that gives English 'claim,' 'exclaim,' and 'clamor'). In ancient Rome, declamatio was literally a training exercise: students and orators would rehearse speeches on invented legal or dramatic scenarios just to hone delivery, with no real case or stakes behind the words — which is exactly why the term later curdled into an insult for speech that's all heat and no substance.