In Greek mythology, Cassandra, also spelled Kassandra or Casandra, (/kəˈsændrə/; Ancient Greek: Κασ(σ)άνδρα, pronounced [kas:ándra], or referred to as Alexandra; Ἀλεξάνδρα) was a Trojan priestess dedicated to the god Apollo and fated by him to utter true prophecies, but never be believed. Cassandra lived through the Trojan War and survived the sack of the city, but was murdered by Clytemnestra and Aegisthus when Agamemnon brought her to Mycenae as a pallake.
In contemporary usage, her name is employed as a rhetorical device to indicate a person whose accurate predictions, generally of impending disaster, are not believed.