Definition of Rigour

Noun: rigour ri-gu(r)
Usage: Brit, Cdn (US: rigor)

The quality of being hard to endure, uninviting or formidable
"the rigour of northern winters";
- asperity, grimness, hardship, rigor [US], severity, severeness, rigorousness, rigourousness [Brit, non-standard]
The quality of being valid and rigorous
- cogency, validity, rigor [US]
Excessive sternness
"the rigours of boot camp"; "rigour of character";
- severity, severeness, harshness, rigor [US], rigorousness, rigourousness [Brit, non-standard], inclemency, hardness, stiffness