The condition or quality of being fast, especially:
The state or quality of being hard (in various senses)
Stability is the state of being resistant to change and not prone to wild fluctuations in emotion.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Intensity of emotion or belief:
Security is defined as being free from danger, or feeling safe.
Something different; variety:
Find another word for sturdiness. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for sturdiness, like: durability, fastness, firmness, soundness, hardness, better, stability, stableness, steadiness, strength and sureness.