The best way to change the given word to a negative sentence is:
Based on the given word, we can see that there is the use of positive words to show that a person is smart and very fast to process things.
With this in mind, if we are to change them to negative words, then we would flip it from someone who is smart to someone who is dull and finds it difficult to process things.
Read more about negatived words here:
https://brainly.com/question/17965175
