rigour

[1]	cogency , rigours , severity , validity , rigor , harshness , hardship , inhospitableness , bleakness , inclemency/inclementness , bitterness , cold
[2]	strictness , asperity , grimness , rigidity , precision , hardship , rigor , preciseness , punctilio , severity , severeness , literalness , exactness , rigorousness , meticulousness , rigourousness , stringency , inflexibility , rigorism , harshness , severity , hardship , asperity , austerity , sternness
[3]	severity , severeness , harshness , rigor , rigorousness , rigourousness , inclemency , hardness , stiffness