acedia

Perhaps the best term for Fran’s persistent mood is acedia, that feeling of not caring much about anything, especially one’s position in the world.

In the early medieval era, Christian monks were very concerned about acedia.

The literal meaning of acedia, derived from Greek, is something like "not caring," which explains why "boring" is subjective.

For instance, Aldous Huxley argued that acedia had only intensified with the onset of modern life.

At the time, he named the sin of sloth “acedia,” meaning “lack of care” in Greek.