nihilistic
[ nahy-uh-lis-tik ]
/ ˌnaɪ əˈlɪs tɪk /
adjective
of or believing in nihilism, or the total rejection of established laws and institutions: An exhibition of nihilistic art—now there's an oxymoron!
embracing anarchy, terrorism, and destruction: nihilstic tactics learned in a terrorist bootcamp.
Philosophy.
of or believing in an extreme form of skepticism; belief in nothingness.