Definition of unstuck adjective from the Oxford Advanced Learner's Dictionary

 

unstuck

 adjective
adjective
BrE BrE//ˌʌnˈstʌk//
 
; NAmE NAmE//ˌʌnˈstʌk//
 
 
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Idioms
    come unstuck
     
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  1. 1to become separated from something it was stuck or fastened to The flap of the envelope had come unstuck.
  2. 2(British English, informal) (of a person, plan, etc.) to fail completely, with bad results Their plans came badly unstuck. If you keep on taking risks, you’ll come unstuck one day.
See the Oxford Advanced American Dictionary entry: unstuck