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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.

Ukraine's military said it hit the headquarters of Russia's elite Rubicon drone military unit in Starobilsk.

From BBC • May 22, 2026

More recently, Hormuz and the Persian Gulf have been a Rubicon for American presidents, sometimes defining their foreign policy and taste for exercising military power.

From The Wall Street Journal • Mar. 21, 2026

Neither ever crossed the Rubicon in a way that would mobilize Americans to war, so we finally crossed the Rubicon ourselves.

From Barron's • Mar. 12, 2026

At some point, the proverbial Rubicon will be crossed, and there may be serious cause for alarm.

From MarketWatch • Jan. 13, 2026

Julius Caesar’s army wouldn’t have left such a mess after crossing the Rubicon.

From "The Wednesday Wars" by Gary D. Schmidt




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