سختی (اسم)
resistance, hardship, privation, rigor, intensity, calamity, distress, severity, violence, tenacity, adversity, hardness, difficulty, trouble, discomfort, rigidity, inclemency, solidity, intension, obstruction, complication, problem, cumber, implacability, inexorability, inflexibility, rigorism
سنگدلی (اسم)
inclemency, inexorability