名词

1. the quality of being steady or securely and immovably fixed in place

Synonym: steadiness

2. the trait of being resolute

e.g. his resoluteness carried him through the battle
it was his unshakeable resolution to finish the work

Synonym: resolutenessfirmness of purposeresolveresolution

3. the property of being unyielding to the touch

4. the muscle tone of healthy tissue

e.g. his muscular firmness

Synonym: soundness