What is heyyy meaning?

"Heyyy" is an informal way of saying "hi" or "hello". The additional "y's" at the end of the word indicate excitement, enthusiasm, or flirtatiousness. The more "y's" added, the greater the level of enthusiasm or emphasis on the greeting. For example, "hey" is a plain greeting, while "heyyy" adds a bit of excitement, and "heyyyyy" could imply a high level of enthusiasm or flirtation. The use of "heyyy" could also be seen as a way to convey a friendly, casual tone in written communication.