Authenticity, in the existentialist sense, is about being true to oneself and living in accordance with one's own values and beliefs, rather than conforming to external expectations or societal norms.

Existentialists believe that authenticity is hindered by a variety of factors, including societal expectations and norms, fear of failure, and lack of self-awareness.

Existentialists argue that freedom is a necessary condition for authenticity because individuals cannot be authentic if they are not free to make their own choices and live in accordance with their own values.

Existentialists believe that responsibility is a necessary condition for authenticity because individuals cannot be authentic if they are not willing to take responsibility for their actions and choices.

Jean-Paul Sartre is most closely associated with the concept of authenticity. His work, Being and Nothingness, is a seminal text in existentialist philosophy and explores the themes of freedom, responsibility, and authenticity.

Bad faith, in existentialism, refers to the state of being inauthentic or denying one's own freedom. It involves conforming to societal expectations, avoiding responsibility, and denying one's own true self.

Existentialism often portrays the individual as being in conflict with society. This is because society often imposes expectations and norms on individuals that conflict with their own values and beliefs.

Dasein is a German term that means 'being-there' or 'being-in-the-world'. It is a key concept in existentialism and refers to the human condition of being in the world and having to deal with the challenges and opportunities that this entails.

Existentialism typically holds that life has no inherent meaning. This is because meaning is something that is created by individuals through their actions and choices.

Angst is a German term that means 'anxiety', 'dread', or 'despair'. It is a key concept in existentialism and refers to the feeling of anxiety or dread that arises from the awareness of one's own existence and the challenges and uncertainties that this entails.

Existentialism views death as the ultimate reality that all individuals must face. This can be a source of anxiety, but it can also be a motivator for living, as it encourages individuals to make the most of their time on earth.

Commitment, in existentialism, refers to the act of making a choice and sticking to it, taking responsibility for one's actions, and being true to oneself. It is an important part of living an authentic life.

Existentialism views the past as a source of learning and experience that can help individuals to grow and develop. However, it also recognizes that the past can be a burden if individuals dwell on it too much or allow it to define them.

Hope, in existentialism, is a belief in a better future, a desire for something that is not yet possible, and a source of motivation. It is an important part of living an authentic life, as it gives individuals something to strive for.

Existentialism views the future as uncertain, a source of anxiety, and a source of hope. It is uncertain because individuals cannot know what will happen in the future. It is a source of anxiety because individuals are aware of their own mortality and the fact that they will eventually die. It is also a source of hope because individuals can strive for a better future and work to create a more meaningful life.