Asperity, grimness, hardship, rigor, rigour, severity, severeness, rigorousness, difficulty generic term, difficultness generic term noun, severity, severeness, harshness, rigor, rigour, rigorousness, inclemency, hardness, stiffness, sternness generic term, strictness generic term
Vogais: iououe
Consoantes: rgrsnss
rigorism, recursion, regression, rosicrucian, rex harrison, resorcin.