misimpression

/ˌmɪs.ɪmˈprɛʃ.ən/
noun
  1. A wrong or mistaken idea or belief about someone or something.
    • His joke gave the misimpression that he didn't care about the project.
    • The article created a misimpression that the company was going bankrupt.
    • I don't want to leave you with the misimpression that I'm unhappy here.