ˈrigəˌrizəm noun
( -s )
Etymology: French rigorisme, from Latin rigor + French -isme -ism
1. : rigidity in principle or practice: as
a. : austerity of life
b. : strictness in ethical principles — usually used of ascetic ethics
2. : a system of moral theology holding that when doubt exists as to whether a law of Roman Catholicism is binding in a particular case the law must always be obeyed