in·sta·bil·i·ty /ˌɪn(t)stəˈbɪləti/
  不安定,不穩定,基礎薄弱
  in·sta·bil·i·ty /ˌɪn(t)stəˈbɪlətɪ/ 名詞
  不穩定性,不穩定,動搖性,不穩性,易變性,不安定度
  instability
  不穩定性
  instability
  *不穩定性
  In·sta·bil·i·ty n.; pl. Instabilities
  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.
  2. Lack of determination of fixedness; inconstancy; fickleness; mutability; changeableness; as, instability of character, temper, custom, etc.
  Syn: -- Inconstancy; fickleness; changeableness; wavering; unsteadiness; unstableness.
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  instability
       n 1: an unstable order [ant: stability]
       2: unreliability attributable to being unstable
       3: a state of disequilibrium (as may occur in cases of inner
          ear disease) [syn: imbalance, unbalance] [ant: balance]
       4: the quality or attribute of being unstable and irresolute
          [syn: unstableness] [ant: stability, stability]