apprehension in WordNet English dictionary

1. the act of apprehending (especially apprehending a criminal)
   "the policeman on the beat got credit for the collar"
   apprehension  arrest  catch  collar  pinch  taking into custody 
   
2. the cognitive condition of someone who understands
   "he has virtually no understanding of social cause and effect"
   understanding  apprehension  discernment  savvy 
   
3. painful expectation
   apprehension  misgiving 
   
4. fearful expectation or anticipation
   "the student looked around the examination room with apprehension"
   apprehension  apprehensiveness  dread