Wild, intense, and dangerous aggression or fierceness, often shown by animals or in violent situations.
From Latin 'ferocitas' (wildness, savageness), rooted in 'ferox' (fierce, untamed). Entered English in the 1500s from French and Latin legal and literary texts.
A lion attacking with ferocity and a person speaking with ferocity use the exact same word—it shows how English applies animal intensity to human behavior, revealing how we see aggression across nature and civilization.
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