1. to breathe rapidly and deeply, often involuntarily, usually as a result of anxiety, panic, or physical exertion
Usage: third-person singular present tense of 'hyperventilate'

Examples

• When she gets anxious before exams, she hyperventilates and feels dizzy.
• The athlete hyperventilates during intense training sessions.
• He hyperventilates whenever he has a panic attack.
• She hyperventilates so much during stressful moments that she becomes lightheaded.
• The patient hyperventilates due to the pain and fear of the medical procedure.
• During the horror movie, the nervous viewer hyperventilates in her seat.