monachism
/ˈmɒnəkɪz(ə)m/(also monacheism)
noun
The mode or rule of life characteristic of monks and nuns; the monastic system or principle; monasticism.
Origin
Late 16th century; earliest use found in William Harrison (1535–1593), historian and topographer. From post-classical Latin monachus monk + -ism, probably after Middle French, French monachisme or post-classical Latin monachismus.