ne plus ultra

Etymology
Borrowed from.

Noun

 * 1) The highest, ultimate point of achievement which can be reached; perfection.
 * 2) * November 30, 2014, Julia Kavanagh, Rome: The ‘ne plus ultra’ of Art
 * It doesn’t get any better than this because Rome, like Florence, is the ne plus ultra of art.
 * 1) The perfect or most extreme example of its kind; the ultimate.
 * 2)  A prohibition against proceeding further; an insuperable obstacle or limiting condition.
 * 1)  A prohibition against proceeding further; an insuperable obstacle or limiting condition.

Translations

 * French:

Etymology
of a subjunctive verb like ; or reinterpreted as a negative result clause with ellipsis of.