asperity: something hard to endure; "the asperity of northern winters"
severity: excessive sternness; "severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
Rigour or rigor (see spelling differences) has a number of meanings in relation to intellectual life and discourse. These are separate from public and political applications with their suggestion of laws enforced to the letter, or political absolutism. ...
a harsh or severe experience; a trembling or shivering response; character of being unyielding or inflexible; shrewd questioning; higher level of difficulty; Common misspelling of rigor.. An abbreviated form of rigour mortis
[Ex 1:13,14; Lev 25:43,46,53] Strictness; exactness without allowance, latitude, or indulgence.
is the quality of work that is both cognitively challenging and engaging.
The degree to which research methods are scrupulously and meticulously carried out.
To allow software designers to be sure exactly what Codecharts represent and reason rigorously about them