nihilistic

adjective
UK /ˌnaɪ.ɪˈlɪs.tɪk/
US /ˌnaɪ.əˈlɪs.tɪk/

Believing that nothing really matters or has meaning.

His nihilistic attitude made him stop caring about his schoolwork.


OTHER MEANINGS

2. Rejecting common beliefs and values as pointless.

The film's nihilistic tone shocked many viewers.

3. Believing that life has no purpose or value.

She felt nihilistic after losing everything she loved.

4. Showing a belief that rules and morals do not matter.

The villain's nihilistic plan was to destroy the whole city.