Multiple choice Directions: Choose the most similar word from the option given below. Insane Intelligent Mad Superpower Mankind Reveal answer Fill a bubble to check yourself B Correct answer Explanation Insane means mentally ill, deranged, or crazy. Mad is the correct synonym - in this context, mad means mentally unbalanced or irrational. Intelligent (opposite trait), Superpower (ability), and Mankind (humanity) are not related meanings.