mindmap root((危险)) dangerous applies to whatever may cause loss or harm unless dealt with carefully: soldiers on a ~ mission. hazardous implies great and continuous risk of harm or failure and small chance of successfully avoiding disaster: claims that smoking is ~ to your health. precarious suggests insecurity and uncertainty resulting from danger or hazard: has only a ~ hold on reality. perilous strongly implies the immediacy of danger: the situation at the foreign embassy has grown ~. risky often applies to a known and voluntarily accepted danger: shy away from ~ investments.