Definition of bug out phrasal verb from the Oxford Advanced American Dictionary

 

bug out

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    bug out

    (informal)
     
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  1. 1 (especially of someone's eyes) to be wide open and stick out Their eyes were bugging out of their heads when they saw it. I think it made his eyes bug out more than usual.
  2. 2 to leave a place or situation, especially because it is becoming dangerous We should bug out now before it's too late. They decided it was time to bug out.
  3. 3 to become too frightened to do something Susan started to bug out when she heard a noise in the bushes.
See the Oxford Advanced Learner's Dictionary entry: bug out