worry in WordNet English dictionary

1. be concerned with
   "I worry about my grades"
   worry  care 
   
2. be on the mind of
   "I worry about the second Germanic consonant shift"
   concern  interest  occupy  worry 
   
3. disturb the peace of mind of; afflict with mental agitation or distress
   "I cannot sleep--my daughter's health is worrying me"
   worry  vex 
   
4. lacerate by biting
   "the dog worried his bone"
   worry 
   
5. touch or rub constantly
   "The old man worried his beads"
   worry 
   
6. be worried, concerned, anxious, troubled, or uneasy
   "I worry about my job"
   worry 
   

1. something or someone that causes anxiety; a source of unhappiness
   "New York traffic is a constant concern"; "it's a major worry"
   concern  worry  headache  vexation 
   
2. a strong feeling of anxiety
   "his worry over the prospect of being fired"; "it is not work but worry that kills"; "he wanted to die and end his troubles"
   worry  trouble