from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A limit that when exceeded, or an action that when taken, cannot be reversed.


From Rubicon. See cross the Rubicon. (Wiktionary)



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  • I do notice that a Wordnik denizen has chosen "rubicon" as a user identity, so I apologize if any offense is taken.

    December 7, 2010

  • I don't know what the deal is, but in Bloomington Indiana, wherein I doth make my humble abode, the term "Rubicon" is suddenly all over the place - there are businesses, an office park, a recurrent event - I think there is also a Jeep called this. I can only assume this is a fad word and I make it a point to automatically reject fads.

    December 7, 2010

  • before I learnt its metaphorical meaning, this is what 'rubicon' meant to me, and nothing more:

    March 1, 2010

  • Further examples

    Fiona Apple's song, "Better Version of me" (Extraordinary Machine, 2005)begins with the line, "The nickel dropped when I was on my way beyond the Rubicon."

    Aimee Mann's song "High on Sunday 51" (Lost in Space, 2002) contains the line, "We have crossed that Rubicon/ The ship awash our rudder gone..."

    June 10, 2009