mission impossible
noun /ˌmɪʃn ɪmˈpɒsəbl/
/ˌmɪʃn ɪmˈpɑːsəbl/
[countable, uncountable]- a difficult or impossible task
- Taking a selfie with the Eiffel tower turns out to be a mission impossible, believe me!
- Sometimes it feels like mission impossible to keep the children's toys neat and tidy.