This student is befuddled by the problem on the board.
The definition of befuddle means to confuse someone or to make something difficult to understand.
An example of befuddle is when you try to explain a complicated calculus problem to someone who doesn't know anything about calculus.
transitive verb-·dled, -·dling
- to fuddle or confuse (the mind, a person, etc.)
- to stupefy with alcoholic liquor
transitive verbbe·fud·dled, be·fud·dling, be·fud·dles
- To cause (someone) to be unable to think clearly; confuse:
- To stupefy with alcohol; intoxicate.