Angst (noun)

1. A feeling of deep anxiety or dread, typically an unfocused one about the human condition or the state of the world in general.
2. A mood of great uncertainty or insecurity.

Origin:

German, from old high german angust, "pain, anxiety", from proto-germanic *angustaz "narrow".

Examples:

1. The novel portrays the angst of adolescence.
2. She felt a sense of angst as she faced the uncertainty of the future.
3. The character's angst was palpable in the story.
4. The artist's work is often characterized by a sense of angst and alienation.
5. The angst of the situation was palpable.