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unstable


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Unstable  \Un*sta"ble\,  a.  [Cf.  {Instable}.] 
  Not  stable;  not  firm,  fixed,  or  constant;  subject  to  change 
  or  overthrow.  --  {Un*sta"ble*ness},  n.  Chaucer. 
 
  {Unstable  equilibrium}.  See  {Stable  equilibrium},  under 
  {Stable}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  unstable 
  adj  1:  lacking  stability  or  fixity  or  firmness;  "unstable  political 
  conditions";  "the  tower  proved  to  be  unstable  in  the 
  high  wind";  "an  unstable  world  economy"  [ant:  {stable}] 
  2:  highly  or  violently  reactive;  "sensitive  and  highly  unstable 
  compounds" 
  3:  affording  no  ease  or  reassurance;  "a  precarious  truce"  [syn: 
  {precarious}] 
  4:  suffering  from  severe  mental  illness;  "of  unsound  mind" 
  [syn:  {mentally  ill},  {unsound}] 
  5:  disposed  to  psychological  variability;  "his  rather  unstable 
  religious  convictions" 
  6:  subject  to  change;  variable;  "a  fluid  situation  fraught  with 
  uncertainty";  "everything  was  unstable  following  the  coup 
  [syn:  {fluid}] 




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