impossible

  • (noun): An impossibility
  • (adjective): Not possible; not able to be done or happen.
  • (adjective): (of a person) Very difficult to deal with.
  • (adjective): Imaginary
  • Late 14th century: “Madame,” quod he, “this were an impossible!” — Geoffrey Chaucer, ‘The Franklin's Tale’, Canterbury Tales
  • It is difficult, if not impossible, to memorize 20,000 consecutive numbers.
  • You never listen to a word I say – you're impossible!
  • impossible quantities, or imaginary numbers