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.
overripe
adj
Excessively ripe; spoiled; gone bad.
How often have the words Demosthenic and overripe occurred in a corpus of books? (source: Google Ngram Viewer )