epideictic
adjective
ep·i·deic·tic
¦epə¦dīktik
: designed primarily for rhetorical effect : demonstrative
epideictic style of writing
the Indian speeches are … more of the nature of the forensic and, occasionally, epideictic or panegyric, than of deliberative oratory
H. J. C. Grierson
—used especially of ceremonial orations of praise or blame H. J. C. Grierson
Word History
Etymology
Greek epideiktikos, from (assumed) Greek epideiktos (verbal of Greek epideiknynai to exhibit, show off, display, from epi- + deiknynai to show) + Greek -ikos -ic