wide-eyed

Adjective

• (used of eyes) fully open or extended
  • stared with wide eyes
    

• exhibiting childlike simplicity and credulity
  • childlike trust
    
  • dewy-eyed innocence
    
  • listened in round-eyed wonder
    

Related words

• Synonyms: 
  wide , childlike , round-eyed , dewy-eyed , simple