n.; pl. Instabilities [ L. instabilitas: cf. F. instabilité. ] [ 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 ] |