Hyperbŏlus in Harpers Dictionary of Classical Antiquities

（Ὑπέρβολος). An Athenian demagogue in the Peloponnesian War, of servile origin. In order to get rid of either Nicias or Alcibiades, Hyperbolus called for the exercise of the ostracism. But the parties endangered combined to defeat him, and the vote of exile fell on Hyperbolus himself-an application of that dignified punishment by which it was thought to have been so debased that the use of it was never recurred to. Some years afterwards he was murdered by the oligarchs at Samos, B.C. 411 (Thuc.viii. 74).

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