ruthless and violent

characterized by a contrary, irritable, or unreasonable temperament or behavior

characterized by cruelty, violence, or tyrannical behavior

cruel, ruthless, and tyrannical

to be inconsistent, contradictory, or at odds with facts or statements

malicious social trends or conduct characterized by vicious currents and hostility

A mythical evil serpent or dragon in Western mythology, specifically referring to the dragon or ancient serpent described in the Book of Revelation.