Rubicon

usgb/ðə ˈruːbɪkɑːn/
noun

An action or decision that cannot be undone or reversed, usually leading to a significant change or point of no return.

With the invasion of their homeland, the people knew they had crossed the rubicon, there was no turning back now.
Visual representation of "rubicon" - An action or decision that cannot be undone or reversed, usually leading to a significant change or point of no return.

Often appears as...

  • cross the rubicon
  • rubicon has been crossed

Usage tips

Formal

Idiomatic

Definition 1 of 1
Visual representation of "rubicon"
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Historical Reference

The term 'rubicon' originates from Julius Caesar's irreversible step of crossing the Rubicon river, a historical event.

Illustration for Historical Reference
After quitting his job, he felt like he had crossed the rubicon, starting a new life chapter.
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Irreversible Action

'Rubicon' signifies a decision made is final and there's no going back.

Illustration for Irreversible Action
Choosing to disclose the secret, she knew she was crossing the rubicon.
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Metaphorical Use

Often used metaphorically to express a critical decision or action with far-reaching consequences.

Illustration for Metaphorical Use
The company's move to buy its competitor was, indeed, crossing the rubicon.
Visual representation of the word "Rubicon"

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