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Definition of: instability
(in′stə·bil′ə·tē) noun plural ·ties
1. Lack of stability or firmness.
2. Mutability of opinion or conduct; inconstancy; changeableness.
3. Flimsiness of construction; liability to give way; insecurity: the instability of a bridge. Synonyms: changeableness, fickleness, flightiness, inconstancy, mutability, unstableness, unsteadiness. Antonyms: certainty, constancy, firmness, persistence, stability, steadiness.
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