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instability - 5 dictionary results
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in⋅sta⋅bil⋅i⋅ty

   [in-stuh-bil-i-tee]
–noun
1. the quality or state of being unstable; lack of stability or firmness.
2. the tendency to behave in an unpredictable, changeable, or erratic manner: emotional instability.
Origin:
1375–1425; late ME instabilite < L instabilitās. See in- 3 , stability
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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Language Translation for : instability
Spanish: inestabilidad, German: die Unbeständigkeit, Japanese: 不安定
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in·sta·bil·i·ty     (ĭn'stə-bĭl'ĭ-tē)  Pronunciation Key 
n.   pl. in·sta·bil·i·ties
  1. Lack of physical stability; unsteadiness.
  2. The quality or condition of being erratic or undependable: emotional instability; political instability.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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instability 
c.1422, from M.Fr. instabilite, from L. instabilitatem (nom. instabilitas) "unsteadiness," from instabilis "unsteady," from in- "not" + stabilis (see stable (2)).

Online Etymology Dictionary, © 2001 Douglas Harper
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instability

noun
1. an unstable order [ant: stability] 
2. unreliability attributable to being unstable 
3. a lack of balance or state of disequilibrium; "a hormonal imbalance" [syn: imbalance] [ant: balance] 
4. the quality or attribute of being unstable and irresolute [ant: stability] 

WordNet® 3.0, © 2006 by Princeton University.
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Instability

In`sta*bil"i*ty\, n.; pl. Instabilities. [L. instabilitas: cf. F. instabilit['e].]

1. The quality or condition of being unstable; want of stability, firmness, or steadiness; liability to give way or to fail; insecurity; precariousness; as, the instability of a building.

2. Lack of determination of fixedness; inconstancy; fickleness; mutability; changeableness; as, instability of character, temper, custom, etc. --Addison.

Syn: Inconstancy; fickleness; changeableness; wavering; unsteadiness; unstableness.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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