risk

(noun) a source of danger; a possibility of incurring loss or misfortune. Synonyms: hazard, jeopardy, peril, endangerment. Examples: "Drinking alcohol is a health hazard."

(noun) a venture undertaken without regard to possible loss or injury. Synonyms: peril, danger. Examples: "He saw the rewards but not the risks of crime." "There was a danger he would do the wrong thing."

(noun) the probability of becoming infected given that exposure to an infectious agent has occurred. Synonyms: risk of infection.

(noun) the probability of being exposed to an infectious agent. Synonyms: risk of exposure.

(verb) expose to a chance of loss or damage. Synonyms: put on the line, lay on the line. Examples: "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."

(verb) take a risk in the hope of a favorable outcome. Synonyms: gamble, chance, hazard, take chances, adventure, run a risk, take a chance. Examples: "When you buy these stocks you are gambling."