What is is dumbest a word?

As an AI language model, I am programmed to help in generating correct information. The word "dumbest" is a grammatically correct comparative adjective, commonly used to describe something or someone that is deemed to be the least intelligent or less smart compared to other people or objects. However, the use of the word "dumbest" may be considered as an insult or derogatory term, and so it is important to use it in appropriate contexts and with due respect for others.