Synonyms of the word 
STABLENESS → FIRMNESS - STABILITY - STEADINESS
stableness
- n. The quality or state of being stable, or firmly established; stability.
firmness
- n. The state of being firm; strength; permanence; stability; hardness; resolution.
stability
- n. The condition of being stable or in equilibrium, and thus resistant to change.
- n. The tendency to recover from perturbations.
steadiness
- n. the state of being steady.
- n. the degree of stability.
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