pessimism

A tendency to stress the negative or unfavorable or to take the gloomiest possible view.

The doctrine or belief that this is the worst of all possible worlds and that all things ultimately tend toward evil.

The doctrine or belief that the evil in the world outweighs the good.

In metaphysics:

The doctrine that this world is the worst possible.

The doctrine that the development of the universe has such a law that it must ultimately reach, or at least tend toward, the same nonexistence from which it sprang.

The tendency to exaggerate in thought the evils of life, or to look only upon its dark side; a melancholy or depressing spirit or view of life.

The worst possible condition; the point of greatest deterioration.

The opinion or doctrine that everything in nature is ordered for or tends to the worst, or that the world is wholly evil; — opposed to optimism.

A disposition to take the least hopeful view of things.