stock-still

Adjective

• absolutely still
  • frozen with horror
    
  • they stood rooted in astonishment
    

Adverb

• without moving or making a sound
  • he sat still as a statue
    
  • time stood still
    
  • they waited stock-still outside the door
    
  • he couldn't hold still any longer
    

Related words

• Synonyms: 
  frozen(p) , rooted(p) , still