tautness
1. [ noun ] the physical condition of being stretched or strained
Synonyms: tension tenseness tensity
Examples:

"it places great tension on the leg muscles" "he could feel the tenseness of her body"

Related terms: condition tonicity tense
2. [ noun ] lack of movement or room for movement
Synonyms: tightness
Related terms: looseness immovability
Similar spelling:   tatting