noun
tightness
Synonyms: astriction, balance, constriction, force, pressure, rigidity, stiffness, strain, straining, stress, stretching, tautness, tenseness, tensity
Antonyms: limpness, looseness, relaxation, slack
noun
mental stress
Synonyms: agitation, antsiness, ants in pants, anxiety, apprehension, bad feeling, brunt, concern, discomfort, disquiet, edginess, hostility, jitters, jumps, nail-biting, nerves, nervousness, pins and needles, pressure, restlessness, shakes, strain, suspense, unease, uneasiness, worriment, worry
Antonyms: calmness, contentedness, ease, peace, relaxation