from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Lack of physical stability; unsteadiness.
- n. The quality or condition of being erratic or undependable: emotional instability; political instability.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The quality of being unstable.
- n. A state that is not in equilibrium, or in which a small change has a large irreversible effect.
from the GNU version of the Collaborative International Dictionary of English
- n. The quality or condition of being unstable; lack of stability, firmness, or steadiness; liability to give way or to fail; insecurity; precariousness.
- n. Lack of determination of fixedness; inconstancy; fickleness; mutability; changeableness
from The Century Dictionary and Cyclopedia
- n. The state of being unstable; want of stability or firmness, physical or moral; liability to fall, fail, give way, or suffer change.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an unstable order
- n. unreliability attributable to being unstable
- n. the quality or attribute of being unstable and irresolute
- n. a lack of balance or state of disequilibrium
in- + stability (Wiktionary)