dangerous
UK: ˈdeɪn(d)ʒ(ə)rəs | US: ˈdeɪndʒərəs
adj. likely to cause harm or injury
adj. involving risk or peril
The word "dangerous" originates from the Old French "dangeros," which itself derives from "danger" (meaning "power, jurisdiction, risk"). The root "danger" traces back to Latin "dominium" (lordship, control), reflecting the medieval concept of peril as something under a lord's authority. Over time, "danger" shifted to emphasize risk, and the suffix "-ous" (from Latin "-osus") was added to form the adjective, solidifying its modern meaning of "full of risk."
Swimming in rough seas can be dangerous.
The chemicals are labeled as highly dangerous.
He avoided the dangerous neighborhood at night.
The mission was too dangerous to attempt alone.
Wild animals may become dangerous when threatened.