In the occult of classical antiquity, cledonism, or cledonomancy, was a kind of divination based on chance events or encounters, such as words occasionally uttered.
The word is formed from the Greek κληδών, which signifies rumor, a report, omen, fame, name.
Thus, instead of prison, they used the word domicilium (residence, dwelling); and to avoid Erinyes, said Eumenides.
Before taking vengeance on the suitors, Odysseus asks for a divine sign, and Zeus answers with a clap of thunder.
This is immediately followed by words from a servant-woman, asking Zeus to "let this be the very last day that the suitors dine in the house of Odysseus.