Constringency is a term used to describe the state of being rigid, stiff, or inflexible. It is often used to describe objects that are hard and difficult to bend or move. Synonyms for constringency include rigidity, stiffness, inflexibility, hardness, toughness, resilience, firmness, and tautness. These words are commonly used to describe materials such as steel, wood, or plastic, but are also used to describe human muscles or the tension in a rope. Constringency can also refer to a sense of tightness or constriction, such as a feeling of pressure or squeezing around a body part. Other related terms include tension, compression, and contraction.