crossing the Rubicon

/ˌkrɒsɪŋ ðə ˈruːbɪkɒn/

taking an irreversible step

crossing the Rubicon in a sentence

“Announcing the merger meant crossing the Rubicon.”

Caesar's illegal crossing of this river with his army in 49 BCE

Related Words

Pyrrhic

won at too great a cost to be worthwhile

Roman à clef

a novel with real people disguised as fictional characters

Rubicon

a point of no return

Pax Romana

a period of relative peace and stability

veni, vidi, vici

I came, I saw, I conquered

et tu, Brute

expression of betrayal by a trusted person