Rubicon.
Rubicon
Meaning & usage
Rubicon
Where this word comes from
Compound of rubeus (“red, reddish”) + -icus + -ō, from rubeō (“to be red”), ultimately from Proto-Indo-European *h₁rewdʰ- (“red”), an allusion to the colour of the river caused by mud deposits.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.