zenith
🇺🇸
/ˈziːnɪθ/
🇬🇧
/ˈzenɪθ/
The point in the sky that is directly above you, like when the sun is at its highest point in the sky at noon.
The sun reached its zenith, casting no shadows.
The peak of something, like the time when it is at its best or most successful.
The company reached the zenith of its success in the 1990s.