na-adjective
Describes an attitude, worldview, or expression that denies meaning, value, or purpose. Often used in philosophical or literary contexts.
彼の虚無的な考え方にはついていけない。
I can't go along with his nihilistic way of thinking.
その小説は虚無的な世界観を描いている。
That novel depicts a nihilistic worldview.
A loanword from English 'nihilistic', used similarly but with a more modern or Western philosophical nuance.
Formed from 虚無 (kyomu, 'nothingness, nihilism') + the adjectival suffix 的 (-teki, '-like, -istic'). 虚無 itself is a Sino-Japanese compound of 虚 ('void, empty') and 無 ('nothing, without').