asceticism
ascetic
noun[ C ]
uk /əˈset.ɪk/ us /əˈset̬.ɪk/
someone who lives an ascetic life, often for religious reasons: 苦行者;苦行修道者
He lived as an ascetic.他过着苦行者的日子。

SMART Vocabulary: related words and phrases

Religious people: monks & nuns
abbess
abbey
abbot
anchorite
benedictine
Franciscan
friar
friary
habit
hermit
lay brother
monastic
monastically
monasticism
monk
mother
prioress
priory
Trappist monk
veil

ascetic | American Dictionary

ascetic
adjective
us/əˈset̬·ɪk/
avoiding physical comforts and living a simple life