the die is cast - Wiktionary
2019-6-3 · The form “the die is cast” is from the Latin iacta ālea est, a grammatically, and thereby semantically, incorrect translation by Suetonius, 121 CE, of the Ancient Greek phrase of Menander ἀνερρίφθω κύβος (anerrhíphthō kúbos), which Caesar quoted in Greek (not Latin).