1) Condition 2) State of stress 3) Status 4) Stretching quality 5) Taut quality 6) Tautness 7) Tenseness 8) Tension 9) Tightness 1) Tautness 2) Tenseness 3) Tonic 4) Tonicity 5) Tonus 
• (n.) The quality or state of being tense, or strained to stiffness; tension; tenseness.
Ten'si·ty noun The quality or state of being tense, or strained to stiffness; tension; tenseness. 
tensity The quality or condition of being tense; a state of tension.
noun the physical condition of being stretched or strained; `it places great tension on the leg muscles`; `he could feel the tenseness of her body`