Tightness describes the quality of being pulled, stretched, or pressed firmly together. When you lace your shoes snugly, you feel the tightness across the top of your foot. When you stretch a rubber band between your fingers, you can feel its tightness increase as you pull. A rope pulled taut between two trees has tightness, while one lying slack on the ground doesn't.

The word also describes physical sensations in your body. Your muscles might have tightness after a hard workout, feeling stiff and compressed rather than loose and relaxed. You might feel tightness in your chest when you're anxious, or tightness in your jaw when you're concentrating hard on a difficult problem.

In a different sense, tightness can describe how closely packed things are. A schedule with no gaps between activities has tightness to it. A tight formation of marching band members shows precision and discipline. When a coach talks about the tightness of the score, they mean the game is close, with little difference between the teams.

People also use tightness to describe close relationships: the tightness of a friendship means those friends trust each other deeply and stick together through challenges.