say goodbye

present singular third person says goodbye · participle present saying goodbye · participle past said goodbye · past said goodbye

1. literal senseTo wish someone farewell upon their leaving.

   Hello, hello / I don't know why you say goodbye, I say hello

   1967, Lennon–McCartney, “Hello, Goodbye”, performed by The Beatles

2. idiomaticTo separate from someone or something.

   If we can't agree on whether to have children, maybe it's time to say goodbye.

   Synonyms: take one's leave

3. figurativelyidiomaticTo cease to have, or have to do, something.

   Say goodbye to long waits at the airport with our new preboarding service.

   1 more example

   You can say goodbye to your inheritance if you annoy your parents too much!