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单词 unstable
释义 un·stable
\“+\ adjective
Etymology: Middle English, from un- (I) + stable
: not stable: as
 a.
  (1) : not firm or fixed in one place : apt to move : movable
   < snow as unstable as aspic trembled on the steep slope — R.L.Neuberger >
   < the unstable shifting sands of the desert >
  (2) : lacking steadiness : apt to sway or fall
   < the tower proved to be unstable in a high wind >
   < the bird flutters on its unstable pech >
  (3) : not steady in movement : irregular
   < felt the unstable tripping beat of her heart >
  (4) : not firm or substantial : weak, insecure
   < the young earth was yet unstable, the molten forces within were constantly looking for escape — W.E.Swinton >
   < the road may become so unstable as to compel the imposition of a speed limit — O.S.Nock >
   < built on an unstable foundation >
 b.
  (1) : wavering in purpose or intent : vacillating
   < an unstable and uneasy class of yeomen — S.E.Morison & H.S.Commager >
   < his rather unstable religious convictions — H.E.Starr >
   < woman's love … is volatile, insoluble, unstable — Marcia Anderson >
  (2) : exhibiting or characterized by emotional instability
   < an unstable temperament — Rex Ingamells >
   < the unstable prisoners … placed in the vague but convenient category of psychopaths — A.H.MacCormick >
   < had brought an inherently unstable nature to the point of mental and emotional collapse — E.J.Simmons >
 c.
  (1) : variable in character or condition : liable to change or alteration : changeable
   < an unstable world economy … subjected to periods of wars, inflation, and depression — Farmer's Weekly (South Africa) >
   < the wind might change; for it is an unstable world — Charles Kingsley >
   < unstable climate >
   < unstable relationship >
  (2) : readily decomposing or changing otherwise in chemical composition or biological activity — compare labile 3, sensitive 4e
  (3) : readily changing in physical state or properties
   < unstable emulsions tend to separate into layers >
  (4) : spontaneously radioactive
Synonyms: see inconstant
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更新时间:2024/9/22 1:09:01