Thrasybulus thrăs˝əbyo͞o´ləs [key], d. c.389 BC, Athenian statesman. A strong supporter of the democratic and anti-Spartan party, he successfully opposed (411 BC) the oligarchical Four Hundred and later had Alcibiades recalled. In the Peloponnesian War he fought at Cyzicus (410; now in Turkey) and Arginusae (406). Banished by the Thirty Tyrants , he obtained the help of exiles in Thebes, marched with his force from Phyle to Piraeus, and overthrew (403) the Thirty. He was leading a campaign in a new war against Sparta when the excesses of his troops so outraged the citizens of Aspendus (now in Turkey) that they murdered him.

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