apprehensive

Adjective

• in fear or dread of possible evil or harm
  • apprehensive for one's life
    
  • apprehensive of danger
    

• mentally upset over possible misfortune or danger etc
  • apprehensive about her job
    
  • not used to a city and worried about small things
    
  • felt apprehensive about the consequences
    

• quick to understand
  • a kind and apprehensive friend- Nathaniel Hawthorne
    

Related words

• Synonyms: 
  worried , discerning