Deep anxiety is a term used to describe a feeling of intense fear, worry, and unease. It is often accompanied by physical symptoms such as increased heart rate, sweating, and difficulty breathing. ANGST, STRESS, and DREAD are all words that can be used to describe deep anxiety. ANGST is a German word meaning fear or anxiety, while STRESS is a feeling of pressure or tension. DREAD is an intense feeling of fear or apprehension. All three words can be used to describe the feeling of deep anxiety.