- firmness, soundness - the firmness and tone of healthy tissue; "his muscle firmness"
--1 is a kind of strength
- resoluteness, firmness, resolve, resolution - the trait of being resolute; firmness of purpose; "his resoluteness carried him through the battle"; "it was his unshakeable resolution to finish the work"
--2 is a kind of trait
--2 has particulars: - firmness - the property of being unyielding to the touch
--3 is a kind of hardness
- steadiness, firmness - the quality of being steady or securely and immovably fixed in place
--4 is a kind of immovability, immovableness
--4 has particulars: granite; sureness; stability, stableness - steadiness, firmness - the quality of being steady or securely and immovably fixed in place