ignoramus

/ˌɪɡnəˈreɪməs/
noun
  1. An ignorant or stupid person; someone who lacks knowledge or education.
    • Only an ignoramus would believe that old superstition without any evidence.
    • He called me an ignoramus just because I didn't know the capital of that country.
    • The professor treated the student like an ignoramus for asking a simple question.
What does "ignoramus" mean? | whatsthatwordmean | whatsthatwordmean