senseless and lacking in intelligence
fatuous - silly
The word ‘fatuous’ is a formal way of expressing that you find somebody or something stupid or meaningless. It is commonly used in a political and professional context, particularly when referring to something a person has said that you believe shows a disregard for truth and reality.
Her fatuous comments about the crisis were filled with inaccuracies and not taken seriously by most people.
Staff here can see through the fatuousness of the CEO’s claim that the financial crash will not negatively impact the business.
Gary fatuously insisted that the success of the project was exclusively due to his contribution.