Definitions

1. adjective

relating to Thyestes, a figure in Greek mythology, or to a blood-feud or revenge, especially in a manner that is considered excessively cruel.

“The tragic play was a Thyestean tale of revenge and betrayal.”

2. noun

a blood-feud or revenge, especially one that is considered excessively cruel.

“The prolonged Thyestean cycle of violence eventually consumed the entire town.”