Olympian
Etymology
From Mount Olympus, the towering peak that Greek myth made the home of the chief gods — Zeus, Hera, Apollo, and the rest, collectively the Olympians. Enthroned above the clouds, they watched mortal life with detachment. The adjective borrows that elevated, superhuman poise, distinct from the athletic sense tied to the Olympic Games.
adjective · /uh-LIM-pee-un/
Majestic, superior, and serenely detached, as though observing human affairs from a great height.
What it names
Godlike loftiness — reach for it to describe a calm, aloof grandeur that seems above the ordinary struggles and passions of everyone else.
Example
She surveyed the office chaos with olympian calm, as if none of these deadlines could possibly concern her.
Related idea
Aloof means simply distant or standoffish; olympian adds grandeur and altitude — the detachment reads as majestic superiority, not mere reserve.