steadiness

noun

1.
freedom from wavering or indecision; constancy of resolve or conduct
Derived from:
steady
2.
the quality of being steady or securely and immovably fixed in place
firmness
Antonym:
unsteadiness
Derived from:
steady
3.
the quality of being steady — regular and unvarying
Antonym:
unsteadiness
Derived from:
steady