nihilism
noun
[ ˈnʌɪ(h)ɪlɪz(ə)m ]
• the rejection of all religious and moral principles, in the belief that life is meaningless.
Similar:
negativity,
cynicism,
pessimism,
rejection,
repudiation,
renunciation,
denial,
abnegation,
disbelief,
non-belief,
unbelief,
scepticism,
lack of conviction,
absence of moral values,
agnosticism,
atheism,
non-theism,
Origin:
early 19th century: from Latin nihil ‘nothing’ + -ism.