American English

Definition of existentialism noun from the Oxford Advanced American Dictionary

 

existentialism

 noun
noun
NAmE//ˌɛɡzɪˈstɛnʃəˌlɪzəm//
 
[uncountable] (philosophy)
 
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the theory that humans are free and responsible for their own actions in a world without meaning
existentialist
 
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NAmE//ˌɛɡzɪˈstɛnʃəlɪst//
 
noun Sartre was an existentialist.
existentialist
 
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adjective existentialist theory
See the Oxford Advanced Learner's Dictionary entry: existentialism