dangerous(full of danger) adjective [UK: ˈdeɪn.dʒə.rəs] [US: ˈdeɪn.dʒə.rəs]That man is dangerous. = Ese hombre es peligroso.
dicey [dicier, diciest](fraught with danger) adjective [UK: ˈdaɪ.si] [US: ˈdaɪ.si]
hazardous(risky, dangerous, with the nature of a hazard) adjective [UK: ˈhæ.zə.dəs] [US: ˈhæ.zər.dəs]This plastic garbage bag is free of hazardous chemicals. = Esta bolsa de basura de plástico está libre de productos químicos peligrosos.
nasty [nastier, nastiest](grave or dangerous) adjective [UK: ˈnɑː.sti] [US: ˈnæ.sti]
perilous(dangerous, full of peril) adjective [UK: ˈpe.rə.ləs] [US: ˈpe.rə.ləs]This could have perilous diplomatic consequences. = Esto podría tener consecuencias diplomáticas peligrosas.
