Ne plus ultra

	1.	The uttermost point to which one can go or attain; hence, the summit of achievement; the highest point or degree; the acme.
	2.	A prohibition against proceeding further; an insuperable obstacle or limiting condition.

Noun

1.

ne plus ultra - the state of being without a flaw or defect Synonyms: flawlessness, perfection

cultivation, culture, dream, fare-thee-well, finish, flawlessness, imperfect, intactness, perfect, perfection, polish, refinement, state