definition of
tenseness

[1] #1 tenseness n. [tension, tensity, tautness] the physical condition of being stretched or strained; "it places great tension on the leg muscles"; "he could feel the tenseness of her body". wn

[2] #2 tenseness n. [tension, stress] (psychology) a state of mental or emotional strain or suspense; "he suffered from fatigue and emotional tension"; "stress is a vasoconstrictor". wn