Learn how to say Hey correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word hey:
used to attract attention, to express surprise, interest, or annoyance, or to elicit agreement:
hey, what’s going on here?
US used as a friendly greeting:
I just called to say hey
Northern English informal used as a greeting or as a way of drawing attention to something:
Hey up, Margaret!
Hey up! Here’s the cops!
what the hey
North American informal used as a euphemism for ‘what the hell’:
‘It’ll be a little crowded, but what the hey?’
natural exclamation: first recorded in Middle English