Enter a clue or pattern or both:
The Clue
Cusp (4 letter answer)
The Answer
APEX
Tags
Notes
The answer APEX is seen frequently, appearing about once every 120 puzzles.
Related Clues
Acme
Apogee
Climax
Crest
Culmination
Peak
Pinnacle
Summit
Tip
Top
Vertex
Zenith
Culminating point
High point
High spot
Highest point
Tip or top
Uppermost point
Very top
Ne plus ultra
It's all downhill from here
Definition
APEX as a noun:
1. (vertex, peak, apex, acme) = the highest point (of something); "at the peak of the pyramid"
2. (apex, solar apex, apex of the sun's way) = the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars