Pertaining to or characteristic of Demosthenes, a celebrated Athenian orator (384-322, B.C.), especially famous for his "Phillippics," or orations delivered against the encroachments of Philip, king of Macedon.
euphuistic
adj
Of or pertaining to euphuism.
How often have the words Demosthenic and euphuistic occurred in a corpus of books? (source: Google Ngram Viewer )