morosoph
/ˈmɔrəˌsɑf/
noun
- A person who is foolish or ignorant but pretends to be wise; a learned fool.
- In the debate, he played the role of a morosoph, using big words without understanding their meaning.
- The self-appointed expert turned out to be a morosoph, spouting nonsense with great confidence.
- The internet is full of morosophs who share misinformation as if it were fact.