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Definitions

Rubicon

[roo-bi-kon] / ˈru bɪˌkɒn /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Schneiderman said it is "highly unlikely that the US will choose to use nuclear weapons against Iran. It is the ultimate Rubicon to cross."

From Barron's • Apr. 7, 2026

“It was a crossing of the Rubicon moment,” Hassabis remembered.

From The Wall Street Journal • Mar. 25, 2026

The acquisitions come as Barr, whose other main brands include Rubicon, Funkin and Boost, reported a "strong" financial year, with increases in sales and profitability.

From BBC • Feb. 3, 2026

Investors are running away from the dollar into gold and other assets, but the real Rubicon for markets is the long bond, according to Bank of America chief investment strategist.

From MarketWatch • Jan. 29, 2026

He never suspected that in so doing, he was crossing his Rubicon.

From "Into the Wild" by Jon Krakauer




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