The full form of BYE is Be With You Everytime. This is what we say when a conversation ends after meeting or leaving someone, then we call it as BYE (Be With You Everytime). Sometimes we like to say GoodBye instead of BYE it's mean God Be With You. Bye-Bye is a baby talk expression that is used when separating or leaving. An example of Goodbye in everyday life is that when a father goes to a job and children say Bye-Bye from behind.
Another misconception to people is that bye full form is Between Your Ears. This is not right. Because it is used on the internet while chatting or ending conservation. But what is used on the internet also means Be With You Everytime (BYE).
There are various full form of bye but depend on situation. Some of are here in the below.
If you have any query left in your mind about Bye full form comment in the below. I will reply you soon. Thanks for Reading :)