dazed

Adjective

• stunned or confused and slow to react (as from blows or drunkenness or exhaustion)

• 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
    

Related words

• Synonyms: 
  foggy , groggy , logy , stuporous , stunned , stupefied , stupid(p)