to fear something happening in the future to dread a sudden feeling of intense fear which may include fast heart rate, sweating, shaking and being out of breath a panic attack confident and organised together an uncomfortable feeling of nervousness or worry anxiety a sign you have an illness or health condition a symptom to breathe too fast, causing too much oxygen to enter the blood to hyperventilate to turn very fast to spin something that stops you from focusing on what you're doing a distraction