Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun rubicon

2 senses of rubicon

Sense 1
Rubicon -- (the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war)
       INSTANCE OF=> boundary, bound, bounds -- (the line or plane indicating the limit or extent of something)

Sense 2
Rubicon, point of no return -- (a line that when crossed permits of no return and typically results in irrevocable commitment)
       => line, dividing line, demarcation, contrast -- (a conceptual separation or distinction; "there is a narrow line between sanity and insanity")