Meanings
rubicon1
plural rubicons · alternative Rubicon
- A limit that when surpassed cannot be returned from, or an action that when taken cannot be reversed.
Fortunately for England ſhe is yet on the peaceable ſide of the Rubicon; but as the flames once kindled are not alway eaſily extinguiſhed, the hopes of peace are not ſo clear as before the late myſterious diſpute began.
1787, [Thomas Paine], “Preface”, in Prospects on the Rubicon: Or, An Investigation into the Causes and Consequences of the Politics to be Agitated at the Meeting of Parliament, London: Printed for J[ohn] Debrett, […], →OCLC, page iii5 more examples
So when friends are lied into distrust of each other, and the rubicon has been passed, either by the death of one, or that the light of truth will not break in upon the mist resting upon the other, [...] at a day too late a discovery arises, and the perpetrators of this fruitless crime, console themselves with the saying that it was "all for the sufferer's good.["]
1834 June 16, “Interference”, in The Gleaner, 2nd edition, number 7, Boston, Mass.: Published by Joseph S[torer] Hart, […], →OCLC, column 1But, my hearers, there are Rubicons to be passed in our religious and moral course, as well as in our temporal—occasions in the experience of our hearts, which extend their influence so far into the future, that it mainly depends on the decision we then make, and the purposes we then form, whether we shall at last be saved or lost for ever.
1836 January, James M. Mathews, “Sermon CCVIII. Critical Periods in the Sinner’s Life.”, in Austin Dickinson, editor, The American National Preacher: Or Original Monthly Sermons from Living Ministers of the United States, volume 10, number 8 (number 116 overall), New York, N.Y.: Printed by West & Trow, →OCLC, page 316Forgive me, ghosts of patriots,— [...] / [...] —for being taught in vain / That while the illegitimate Cæsars show / Of meaner stature than the first full strain, / (Confessed incompetent to conquer Gaul) / They swoon as feebly and cross Rubicons / As rashly as any Julius of them all.
1851, Elizabeth Barrett Browning, Casa Guidi Windows. A Poem, London: Chapman & Hall, […], →OCLC, part II, stanza V, page 90We are always passing the Rubicon, or being called upon to see somebody else pass it. Considering how often it has been passed, the Rubicon ought to be as well bridged as the Thames. [...] Looking back a few years, we find that that heaven-born minister, Pitt [i.e., William Pitt the Younger], crossed the Rubicon time after time; and while he was crossing it, [Napoleon] Buonaparte was constantly crossing it also. Later, our Wellington crossed the Rubicon when he marched against the French in the Peninsula.
1853 January–June, “Used-up Classical Allusions”, in The British Journal: A Home, Colonial, and General Magazine, volume III, London: John Mortimer, publisher, […], →OCLC, page 322When one is snugly ensconced under several thicknesses of eiderdown, with the frozen water-bottle sending a cracked and mocking leer from the window sill, getting up is the one thing really irrevocable. It becomes the most final of Rubicons, the most suicidal of bridge-burnings, a leap into an abyss of vaguely dreadful activities,—a fantastic world where people stand on their feet and tie neckties.
1908 February, T[homas] Lawrason Riggs, “On Getting Up”, in J. Howland Auchincloss et al., editors, The Yale Literary Magazine: […], volume LXXIII, number V (number 650 overall), New Haven, Conn.: Published by the editors […]; the Tuttle, Moorehouse & Taylor Company, →ISSN, →OCLC, page 226Synonyms: point of no return
- card gamesEspecially in bezique and piquet: a score which, if not achieved by a losing player, increases the player's penalty.
Brisques are not counted except to determine whether or not there is a rubicon, explained below.
1956, Richard L. Frey, Rules of Games According to Hoyle: Official Rules of More than 200 Popular Games of Skill and Chance with Expert Advice on Winning Play, New York, N.Y.: Fawcett Publications, →OCLC, page 1624 more examples
The game is called a double, and you score 200 instead of 100 when your adversary does not get 100, which, in technical language, is called crossing the Rubicon.
1873 August 1, “Answers to Correspondents. [Piquet.]”, in The Westminster Papers. A Monthly Journal of Chess, Whist, Games of Skill, and the Drama, volume VI, London: W. Kent & Co., […], and W. W. Morgan, […]; Edinburgh: J. Menzies & Co.; Dublin: McGlashan & Gill, published 1874, →OCLC, page 84, column 2If you are a good way ahead, and particularly in the last hand but one, if you have a chance of winning a Rubicon, you should make a safe discard, with the view of dividing or winning the cards, in order to keep your adversary back. On the other hand, if the score is much against you, and you are under a Rubicon, you are justified in making a bold discard.
1885, Cavendish [pseudonym; Henry Jones], “Hints to Learners”, in The Laws of Piquet: Edited by “Cavendish” and Adopted by the Portland and Turf Clubs: With a Treatise on the Game, 4th edition, London: Thomas De La Rue & Co., →OCLC, paragraph 12, page 82"You are getting rather close, Mr. Spinola—the last hand and you need twenty—one to save the rubicon." The "rubicon" means that instead of the loser's score being deducted from the winner's in arriving at the latter's total, it is added to it—a possible difference of nearly 200 points.
1923, Ernest Bramah [pseudonym; Ernest Brammah Smith], “(please specify the page)”, in The Eyes of Max Carrados, London: Grant Richards, →OCLCAs an example: if a player is well ahead, and sees the opportunity to gain a rubicon, he should discard cautiously and play so as to prevent his opponent from saving the rubicon by scoring 100 points.
1989, Peter Arnold, editor, Complete Book of Card Games, New York, N.Y.: Gallery Books, →ISBN, page 64, column 1
present singular third person rubicons · participle present rubiconing · participle past rubiconed · past rubiconed
- transitivecard gamesEspecially in bezique and piquet: to defeat a player who has not achieved the rubicon.
Fleming initiated me into the mysteries of Bézique, and at once set about rubiconing me, [...]
1934, J[ohn] Angus Beckett, “The Return Ice-cap Journey”, in Iceland Adventure: The Double Traverse of Vatnajökull by the Cambridge Expedition, London: H. F. & G. Witherby, →OCLC, pages 125–1262 more examples
A curious score was made in a game of piquet with one of the ladies. [...] In the fifth hand she made a piquet and capot, scoring 121 to 0, and in the sixth hand, being the minor, she made a repiquet, taking all but the last trick, counting 111 to 3, totalling 270, and rubiconing her opponent at 99, with a win of 469 points.
1902 November, Walter Del Mar, “London to Colombo”, in Around the World through Japan, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., →OCLC, pages 3–4Ten points are received for the last trick but brisques are only counted if they make a difference as to who is the winner or if a player is rubiconed [...].
[1954], Helen Fried Joseph, The Family Book of Games and Sports, [Chicago, Ill.]: Popular Mechanics Press, →OCLC, page 167, column 2
Rubicon2
- The same river in the present day, identified with a river previously named Fiumicino.
- A locality in the Shire of Murrindindi, central eastern Victoria, Australia.
plural Rubicons
- Alternative letter-case form of rubicon (“a limit that when exceeded, or an action that when taken, cannot be reversed; especially in bezique and piquet: a score which, if not achieved by a losing player, increases the player's penalty”).
The game is called a double, and you score 200 instead of 100 when your adversary does not get 100, which, in technical language, is called crossing the Rubicon.
1873 August 1, “Answers to Correspondents. [Piquet.]”, in The Westminster Papers. A Monthly Journal of Chess, Whist, Games of Skill, and the Drama, volume VI, London: W. Kent & Co., […], and W. W. Morgan, […]; Edinburgh: J. Menzies & Co.; Dublin: McGlashan & Gill, published 1874, →OCLC, page 84, column 25 more examples
Fortunately for England ſhe is yet on the peaceable ſide of the Rubicon; but as the flames once kindled are not alway eaſily extinguiſhed, the hopes of peace are not ſo clear as before the late myſterious diſpute began.
1787, [Thomas Paine], “Preface”, in Prospects on the Rubicon: Or, An Investigation into the Causes and Consequences of the Politics to be Agitated at the Meeting of Parliament, London: Printed for J[ohn] Debrett, […], →OCLC, page iiiBut, my hearers, there are Rubicons to be passed in our religious and moral course, as well as in our temporal—occasions in the experience of our hearts, which extend their influence so far into the future, that it mainly depends on the decision we then make, and the purposes we then form, whether we shall at last be saved or lost for ever.
1836 January, James M. Mathews, “Sermon CCVIII. Critical Periods in the Sinner’s Life.”, in Austin Dickinson, editor, The American National Preacher: Or Original Monthly Sermons from Living Ministers of the United States, volume 10, number 8 (number 116 overall), New York, N.Y.: Printed by West & Trow, →OCLC, page 316Forgive me, ghosts of patriots,— [...] / [...] —for being taught in vain / That while the illegitimate Cæsars show / Of meaner stature than the first full strain, / (Confessed incompetent to conquer Gaul) / They swoon as feebly and cross Rubicons / As rashly as any Julius of them all.
1851, Elizabeth Barrett Browning, Casa Guidi Windows. A Poem, London: Chapman & Hall, […], →OCLC, part II, stanza V, page 90We are always passing the Rubicon, or being called upon to see somebody else pass it. Considering how often it has been passed, the Rubicon ought to be as well bridged as the Thames. [...] Looking back a few years, we find that that heaven-born minister, Pitt [i.e., William Pitt the Younger], crossed the Rubicon time after time; and while he was crossing it, [Napoleon] Buonaparte was constantly crossing it also. Later, our Wellington crossed the Rubicon when he marched against the French in the Peninsula.
1853 January–June, “Used-up Classical Allusions”, in The British Journal: A Home, Colonial, and General Magazine, volume III, London: John Mortimer, publisher, […], →OCLC, page 322There's only one thing to be done, / For Ministers to save their bacon; / That's to re-cross the Rubicon, / To ground they ne'er should have forsaken. / [...] / On the wrong side [of] the Rubicon, / Hang me if longer I remain; / Gladstone must just re-build his boats, / And take us back again!
1866 June 16, “‘On the Wrong Side of the Rubicon.’: (A Groan from a Mild M.P., Half in and Half out of the Cave.)”, in Punch, or The London Charivari, volume L, London: Published at the office, 85, Fleet Street, […], →OCLC, page 251, column 2
Synonyms & antonyms
nounA limit that when surpassed cannot be returned from, or an action that when taken cannot be reversed.
More synonyms by meaning
nouna line that when crossed permits of no return and typically results in irrevocable commitment
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
rubicon · noun, verb
- Proto-Indo-European*h₁rewdʰ-“red”
- LatinRubicō
- Englishrubicon
The noun is derived from the phrase cross the Rubicon (“to make an irreversible decision or to take an action with consequences”). Julius Caesar’s crossing of the Rubicon, a small river in northeastern Italy, on 10 January 49 B.C.E., indicated his intention to start a civil war with Pompey. Rubicon is derived from Latin Rubicō, Rubicōn (“the Rubicon”), possibly from rubeus (“red, reddish”), from rubeō (“to be red”), ultimately from Proto-Indo-European *h₁rewdʰ- (“red”), an allusion to the colour of the river caused by mud deposits. The verb is derived from the noun.
More words from Latin, Proto-Indo-European
Full word history & related roots →Rubicon · proper noun, noun
- Proto-Indo-European*h₁rewdʰ-“red”
- LatinRubicō
- EnglishRubicon
From Latin Rubicō, Rubicōn (“the Rubicon”), possibly from rubeus (“red, reddish”), from rubeō (“to be red”), ultimately from Proto-Indo-European *h₁rewdʰ- (“red”), an allusion to the colour of the river caused by mud deposits.
More words from Latin, Proto-Indo-European
Full word history & related roots →Translations
Basque Rubikon
- Rubikonsmall river in northeastern Italy
Bulgarian Рубикон
- Рубикон (Rubikon)small river in northeastern Italy
Catalan Rubicó
- Rubicósmall river in northeastern Italy
Czech Rubikon
- Rubikonsmall river in northeastern Italy
Danish Rubicon
- Rubiconsmall river in northeastern Italy
Dutch Rubicon
- Rubiconsmall river in northeastern Italy
Esperanto Rubikono
- Rubikonosmall river in northeastern Italy
Finnish Rubikon
- Rubikonsmall river in northeastern Italy
French Rubicon
- Rubiconsmall river in northeastern Italy
German Rubikon
- Rubikonsmall river in northeastern Italy
Greek Ρουβίκωνας
- Ρουβίκωνας (Rouvíkonas)small river in northeastern Italy
Hebrew רוביקון
- רוביקון (rubikon)small river in northeastern Italy
Hungarian Rubicon
- Rubiconsmall river in northeastern Italy
Italian Rubicone
- Rubiconesmall river in northeastern Italy
Latin Rubicō, Rubicōn
- Rubicōsmall river in northeastern Italy
- Rubicōnsmall river in northeastern Italy
Latvian Rubikona
- Rubikonasmall river in northeastern Italy
Lithuanian Rubikonas
- Rubikonassmall river in northeastern Italy
Norwegian Bokmål Rubicon
- Rubiconsmall river in northeastern Italy
Polish Rubikon
- Rubikonsmall river in northeastern Italy
Portuguese Rubicão
- Rubicãosmall river in northeastern Italy
Romanian Rubicon
- Rubiconsmall river in northeastern Italy
Russian Рубико́н
- Рубико́н (Rubikón)small river in northeastern Italy
Slovak Rubikon
- Rubikonsmall river in northeastern Italy
Spanish Rubicón
- Rubicónsmall river in northeastern Italy
Swedish Rubicon
- Rubiconsmall river in northeastern Italy
Turkish Rubikon
- Rubikonsmall river in northeastern Italy
Ukrainian Рубіко́н
- Рубіко́н (Rubikón)small river in northeastern Italy
Cite this entry
rubicon. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/rubicon
“rubicon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rubicon. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “rubicon,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/rubicon.
Source: rubicon on Wiktionary, CC BY-SA 4.0.