mission impossible

1. 1.

   an extremely dangerous or difficult mission

   Broadermission

Questions about mission impossible

What does mission impossible mean?

mission impossible means "an extremely dangerous or difficult mission".

Is mission impossible a common word?

mission impossible is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.