Synonyms for oratorical

rhetorical, eloquent, declamatory, bombastic, loud, noisy, stentorian, pompous, theatrical, stylistic, expressive, forceful, persuasive, fervid, vivid, elocutionary, intoning, senatorial, gesturing, gesticulative, elaborate, impassioned, lofty, noble, high-sounding, inflated, orotund, tumid, grandiloquent, dramatic, histrionic, artificial, important, stagy, imposing, ostentatious, in the grand style, Periclean; see also fluent 2, verbose.

Antonyms natural*, undramatic, simple.