Main entry: rigor, rigorousness, rigour, rigourousness, severeness, severity, inclemency, hardness, harshness, stiffness
Definition: excessive sternness
Usage: severity of character; the harshness of his punishment was inhuman; the rigors of boot camp
Main entry: asperity, severeness, severity, hardship, grimness, rigor, rigorousness, rigour, rigourousness
Definition: something hard to endure
Usage: the asperity of northern winters