causing fear or anxiety by threatening great harm; "a dangerous operation"; "a grave situation"; "a grave illness"; "grievous bodily harm"; "a serious wound"; "a serious turn of events"; "a severe case of pneumonia"; "a life-threatening disease"
If something is dangerous, it is able or likely to hurt or harm you. It's a dangerous stretch of road. dangerous drugs It's dangerous to jump to early conclusions. = unsafe + dangerously dan·ger·ous·ly He is dangerously ill The coach rocked dangerously
involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions