apprehensive
1. [ adjective ] mentally upset over possible misfortune or danger etc; worried
Synonyms: anxious
Examples:

"anxious parents" "anxious about her job" "not used to a city and anxious about small things" "felt apprehensive about the consequences"

Related terms: uneasy
2. [ adjective ] quick to understand
Synonyms: discerning
Examples:

"a kind and apprehensive friend"- Nathaniel Hawthorne

Related terms: perceptive
3. [ adjective ] in fear or dread of possible evil or harm
Examples:

"apprehensive for one's life" "apprehensive of danger"

Related terms: afraid
Similar spelling:   apprehensively
  apprehensible
  apprehension
  apprehender
  apprehended
  apprehend
  apprentice
  apprenticed
  apprenticeship
  apprehanded