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English definition of “impossible”

impossible

adjective     /ɪmˈpɒs.ɪ.bl̩/ US  /-ˈpɑː.sə-/
B1 If an action or event is impossible, it cannot happen or be achieved: It was impossible to sleep because of the noise. It seems impossible that I could have walked by without noticing her. He made it impossible for me to say no. She ate three plates of spaghetti and a dessert? That's impossible. I don't believe it!UnachievableImpossible and improbable C2 describes a situation that is extremely difficult to deal with or solve: It's an impossible situation - she's got to leave him but she can't bear losing her children.Complicated and difficult to doDifficult to understand C2 describes a person who behaves very badly or is extremely difficult to deal with: I had to leave the job because my boss was impossible. My niece is impossible when she's tired - you can't do anything to please her.Bad and wrong behaviourDisobedientObeying and breaking the lawObedient and compliant impossibility     /ɪmˌpɒs.ɪˈbɪl.ɪ.ti/ US  /-ˌpɑː.səˈbɪl.ə.t̬i/ noun [C or U] C2 What you're asking just can't be done - it's an impossibility.Unachievable
(Definition of impossible adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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