risk in WordNet English dictionary

1. take a risk in the hope of a favorable outcome
   "When you buy these stocks you are gambling"
   gamble  chance  risk  hazard  take chances  adventure  run a risk  take a chance 
   
2. expose to a chance of loss or damage
   "We risked losing a lot of money in this venture"; "Why risk your life?"; "She laid her job on the line when she told the boss that he was wrong"
   risk  put on the line  lay on the line 
   

1. a venture undertaken without regard to possible loss or injury
   "he saw the rewards but not the risks of crime"; "there was a danger he would do the wrong thing"
   risk  peril  danger 
   
2. a source of danger; a possibility of incurring loss or misfortune
   "drinking alcohol is a health hazard"
   hazard  jeopardy  peril  risk  endangerment 
   
3. the probability of being exposed to an infectious agent
   risk  risk of exposure 
   
4. the probability of becoming infected given that exposure to an infectious agent has occurred
   risk  risk of infection