Learn how to say Cassandras correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Cassandra:
a daughter of the Trojan king Priam. She was given the gift of prophecy by Apollo, but when she cheated him, he turned this into a curse by causing her prophecies, though true, to be disbelieved.
(as noun a Cassandra) a prophet of disaster, especially one who is disregarded.