dangerous(full of danger) adjective [UK: ˈdeɪn.dʒə.rəs] [US: ˈdeɪn.dʒə.rəs]John and Mary are dangerous. = John e Mary sono pericolosi.
hazardous(risky, dangerous, with the nature of a hazard) adjective [UK: ˈhæ.zə.dəs] [US: ˈhæ.zər.dəs]Too much drinking may be hazardous to your health. = Bere troppo può essere pericoloso per la salute.
nasty [nastier, nastiest](grave or dangerous) adjective [UK: ˈnɑː.sti] [US: ˈnæ.sti]