The antonyms for the word "relaxations" include tension, stress, strain, pressure, anxiety, unrest, discomfort, and unease. These words describe the opposite state of mind and body from relaxation. When we are tense, we feel tightened up and on edge, and our muscles are often stiff and sore. Stress and pressure can further exacerbate these feelings, causing headaches, respiratory problems, and other physical symptoms. Anxiety and unrest are also common antonyms for relaxation, as they describe a state of constant worry and unease. Discomfort and unease can also be antonyms for relaxation, as they describe the physical and emotional discomfort that often comes with stress and tension.