Can refer to a form of unkind, or ruthless. It could describe someone using their strength or in a way that harms others, either physically, emotionally, or psychologically, without regard for their well-being.
It emphasizes the misuse of right power, often lacking empathy or compassion.
Harshtrength
He/She reveal a harshtrength to confusious bunches of people caused by the unfair hexes who’s hard to deal with.