Existentialism posits that the fear of death is the root of all anxiety, as it confronts us with the inevitability of our own mortality.

Thrownness refers to the existential condition of being thrust into existence without our choosing, confronting us with the challenges and responsibilities of life.

Authenticity, in existentialism, refers to the pursuit of a genuine and meaningful life by staying true to one's own values and beliefs, rather than conforming to external expectations.

Existentialism asserts that life has no inherent meaning or purpose, and it is up to each individual to find and create meaning through their choices, actions, and relationships.

Jean-Paul Sartre is credited with the quote, 'Man is nothing else but what he makes of himself,' which encapsulates the existentialist belief in individual responsibility and the power of choice.

The absurd, in existentialism, refers to the inherent contradiction between human reason's search for meaning and the irrationality and meaninglessness of the universe.

Albert Camus is known for his novel 'The Stranger,' which delves into the existential themes of alienation, meaninglessness, and the absurdity of life.

Dasein, in existentialism, refers to the state of being-in-the-world, emphasizing the interconnectedness between human existence and the world around us.

Friedrich Nietzsche is known for his declaration, 'God is dead,' which symbolizes the decline of traditional religious beliefs and the rise of existentialism.

Anguish, in existentialism, refers to the feeling of dread and anxiety that arises from the realization of one's own existence and the responsibilities and uncertainties that come with it.

Jean-Paul Sartre is known for his book 'Being and Nothingness,' which delves into the existential themes of existence, freedom, and nothingness.

Freedom, in existentialism, refers to the ability to make choices and shape one's own destiny, despite the limitations and challenges of existence.

Søren Kierkegaard is known for his book 'Fear and Trembling,' which explores the existential themes of faith, anxiety, and the absurd.

Commitment, in existentialism, refers to the act of making a choice and taking responsibility for its consequences, despite the uncertainties and challenges that may arise.

René Descartes is known for his famous quote, 'I think, therefore I am,' which emphasizes the fundamental connection between thought and existence.