dullness of mind or state of being lethargic

मानसिक मंदता या सुस्ती की स्थिति

English Usage: His hebetude was evident in his lack of response during the discussion.

Hindi Usage: उसकी मंदता चर्चा के दौरान उसकी प्रतिक्रिया की कमी में स्पष्ट थी.