the Rubicon

noun

Definition of the Rubicon

: a limit or point that is reached when the results of one's actions cannot be changed Once you've crossed the Rubicon there's no going back.

Learn More About the Rubicon

Dictionary Entries Near the Rubicon

the rub

the Rubicon

the ruble

See More Nearby Entries 

Statistics for the Rubicon

Cite this Entry

“The Rubicon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/the%20Rubicon. Accessed 1 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!