Ferocious means extremely fierce, violent, or intense. A ferocious animal attacks with savage force and frightening aggression. A ferocious storm batters everything in its path with powerful winds and torrential rain. The word captures something wild and overwhelming in its intensity.

You might read about a ferocious lion defending its pride, or a ferocious battle in a history book where armies fought with terrible violence. But ferocity isn't only about physical force. A ferocious competitor in sports plays with relentless energy and determination. A ferocious debate means people argue their positions with passionate intensity.

When you describe something as ferocious, you're emphasizing its overwhelming power and intensity. A ferocious thunderstorm unleashes nature's fury with driving rain and howling winds. A ferocious appetite means you're ravenous enough to devour everything on your plate and still want more.