rigor (
http://definr.com/rigor)
n 1: something hard to endure; "the asperity of northern winters"
[syn:
asperity,
grimness,
hardship,
rigour,
severity,
rigorousness]
2: the quality of being logically valid [syn:
cogency,
validity,
rigour]
3: excessive sternness; "severity of character"; "the harshness
of his punishment was inhuman"; "the rigors of boot camp"
[syn:
severity,
harshness,
rigour,
inclemency,
hardness,
stiffness]