Cách sử dụng
Stiffness is a word that describes the feeling of a body part or object that is not very flexible, and may be hard to move or bend. It can be used to describe things like a muscle that feels tight and difficult to stretch or a board that is difficult to bend without breaking. Stiffness can also be used to describe a person's actions or demeanor, when they are inflexible or resistant to change. It is a common word used in discussions of physical movement and mechanics, as well as in situations where someone is being stubborn or unyielding.