stupid in WordNet English dictionary

1. in a state of mental numbness especially as resulting from shock
   "he had a dazed expression on his face"; "lay semiconscious, stunned (or stupefied) by the blow"; "was stupid from fatigue"
   dazed  stunned  stupefied  stupid 
   
2. lacking or marked by lack of intellectual acuity
   stupid 
   
3. lacking intelligence
   "a dull job with lazy and unintelligent co-workers"
   unintelligent  stupid 
   

1. a person who is not very bright
   "The economy, stupid!"
   stupid  stupid person  stupe  dullard  dolt  pudding head  pudden-head  poor fish  pillock