adjective
paramount
PAIR-uh-mownt/ˈpærəmaʊnt/
More important than anything else.
The rescuer treats the child's safety as paramount, leaving possessions behind.

Etymology
The pieces evoke movement “to the hill,” behind the French sense “above” in place, rank, or degree. Physical height became superiority in power or importance, yielding “more important than anything else.”
In context
Guest privacy and security are paramount. I would never keep a lost item or discuss it with other guests.