litheness
/ˈlɪθnɪs/; /ˈlaɪθnɪs/Definitions
1. noun
The quality of being strong and agile in the body; lithy physique or flexibility.
“Her litheness allowed her to excel in gymnastics.”
2. noun
The state or quality of being hard and resistant to wear and tear; durability.
“The company prides itself on the litheness of its high-quality tools.”