What is the definition of Breathing Fear?

"Breathing fear" is like taking a deep breath while simultaneously being so terrified that it feels like you're inhaling the very essence of a haunted mansion! It's the feeling of being so overwhelmed by anxiety that you start to think your chest is about to burst into flames while holding your breath.

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Here's an edgy example sentence: "As he faced the clown who was, dare I say, whispering his doom in his own breath, he felt 'breathing fear' that was about to turn into a full-blown terror attack."