violent; fierce and tough; shrewish (woman)

heroic; intrepid; valiant; dauntless; fierce; ferocious; violent

cunning and fierce

swift and fierce

brave

tough as nails; formidable; kick-ass; plucky

(of a person) lean, tough and capable; (of expression, style etc) concise and effective

rude and violent; fierce and reckless

(of a person) short but plucky (idiom); (of an article) concise and forceful

short but intrepid (idiom)