rigour
(noun)
noun
1. the quality of being valid and rigorous
Similar word(s): cogency, rigor, validity
Definition categories: attribute, believability, credibility, credibleness
2. something hard to endure
Similar word(s): asperity, grimness, hardship, rigor, rigorousness, severeness, severity
Definition categories: attribute, difficultness, difficulty
3. excessive sternness
Similar word(s): hardness, harshness, inclemency, rigor, rigorousness, severeness, severity, stiffness
Definition categories: attribute, sternness, strictness