Intelligence And Cognitive Abilities

adjective describing someone who is lacking in intelligence or quickness of mind

• The professor described the student as being dim witted due to his lack of understanding of the complex theories.
• I can't believe he forgot his own birthday, he's so dim witted sometimes.
• Don't listen to him, he's just a dim witted fool.
• Her decision to invest all her money in that risky venture was quite dim witted.

noun a slow or stupid person

• The professor referred to the student as a dullard for consistently failing to grasp the concepts.
• My brother is such a dullard when it comes to understanding technology.
• Don't be such a dullard, figure it out yourself!
• His dullard behavior made it hard for others to engage in meaningful conversation with him.