1. stupefaction Stupidity is sometimes loosely used for temporary dulness or partial stupor, but chiefly for innate and chronic dulness and sluggishness of mental action, obtuseness of apprehension, etc. Synonyms: stupidity, apathy, insensibility, slowness, stupefaction, dulness, obtuseness, sluggishness, stupor Antonyms: acuteness, brilliancy, keenness, sagacity, alertness, cleverness, quickness, sense, animation, intelligence, readiness, sensibility
Synonyms for stupefaction 
