Nihilistic

[Becky]

A word that nobody really knows what it actually means but is often used by [pretentious] book and film [critics] so that they can feel [smug].

[Greta]

People need to stop confusing [nihilism] with being pessimistic. They are different. You cant be [unhealthily] nihilsitic. Expecting the fall of humanity and our lifetime being pointless can be a positive way of life.
If you are just depressed and think life is not worth living, you are not a [nihilist]. Stop abusing the word.

[Marquetta]

Rejecting all religious and moral principles in the belief that life is meaningless.

[Kai]

connected with a belief that all political and religious organizations are bad, or a system of thought that says that there are no principles or beliefs that have any meaning or can be true: