Firmness
WordNet
noun
(1) The quality of being steady or securely and immovably fixed in place
(2) The trait of being resolute
"His resoluteness carried him through the battle"
"It was his unshakeable resolution to finish the work"
(3) The property of being unyielding to the touch
(4) The muscle tone of healthy tissue
"His muscular firmness"
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