nihilistic
ˌnaɪɪˈlɪstɪk
Definitions
1. adjective
relating to or characterized by nihilism, especially a rejection of traditional values and beliefs
“The nihilistic philosophy of the artist was reflected in his bleak and hopeless paintings.”
2. noun
a person who holds nihilistic views, especially a person who rejects traditional values and beliefs
“The nihilist’s writings were seen as a threat to the established order.”