Instability In`sta*bil"i*ty, n.; pl. {Instabilities}. [L. instabilitas: cf. F. instabilit['e].] [1913 Webster] 1. The quality or condition of being unstable; lack of stability, firmness, or steadiness; liability to give way or to fail; insecurity; precariousness; as, the instability of a building. [1913 Webster]

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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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