STABLENESS, noun 1. Fixedness; firmness of position or establishment; strength to stand; stability; as the stableness of a throne or of a system of laws. 2. Steadiness; constancy; firmness of purpose; stability; as stableness of character, of mind, of principles or opinions.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI