"Ferocious intensity" refers to a very strong and powerful level of passion, focus, or aggression that someone exhibits in their actions or behavior. Full definition
If I leave a bag out within her range of sight, she will attack with ferocious intensity. (sharedappetite.com)
Depp's ferocious intensity reminds us that he is capable of riveting the attention even when not playing the kind of odd, off - kilter roles that have become his specialty over the years. (reelviews.net)
But what separates his latest screen effort, Three Billboards Outside Ebbing, Missouri (Fox Searchlight)-- and could be what lands him in the Oscar race in a big way — is how he centers the film on Frances McDormand, who plays with ferocious intensity an angry, grieving mother facing down an incompetent police department and her own demons, without apology. (vanityfair.com)