rigour
/ˈrɪgə(r)/( <美> rigor)
noun
mass noun
1- the quality of being extremely thorough, exhaustive, or accurate严密, 缜密; 精确：
his analysis is lacking in rigour.
他的分析不够缜密。
1.1
- severity or strictness严格; 严厉; 苛刻：
the full rigour of the law.
该法律的极其严厉性。
1.2
- (rigours) demanding, difficult, or extreme conditions苛刻（或艰苦、极端）的条件：
the rigours of a harsh winter.
寒冬的严酷。
词源
late Middle English: from Old French rigour from Latin rigor 'stiffness'.