acme

/ˈak-mē/

borrowed from Greek akmḗ "point, highest point, culmination," from ak- (going back to Indo-European *heḱ- "pointed") + -mē, noun suffix

noun

  1. the highest point or stage; also : something or someone that represents perfection of the thing expressed

the acme of his fame

summit peak pinnacle climax apex acme culmination mean the highest point attained or attainable. summit implies the topmost level attainable. peak suggests the highest among other high points.