"asceticism" in the noun sense
1. asceticism
the doctrine that through renunciation of worldly pleasures it is possible to achieve a high spiritual or intellectual state
2. austerity, asceticism, nonindulgence
the trait of great self-denial (especially refraining from worldly pleasures)
3. asceticism, ascesis
rigorous self-denial and active self-restraint
Source: WordNet® (An amazing lexical database of English)
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