Learn how to say Hyperventilate correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word hyperventilate:
1breathe or cause to breathe at an abnormally rapid rate, so increasing the rate of loss of carbon dioxide:
she started to hyperventilate under stress
the patients were hyperventilated for two minutes
2 [no object] be or become overexcited:
the President was hyperventilating about a minor newspaper story