say goodbye

Verb

say goodbye (third-person singular simple present says goodbye, present participle saying goodbye, simple past and past participle said goodbye)

1. (literal sense) To wish someone farewell upon their leaving.
   • Hello, hello / I don't know why you say goodbye, I say hello1967, Lennon–McCartney, “Hello, Goodbye”, performed by The Beatles
2. (idiomatic) To 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. (figuratively, idiomatic) To cease to have, or have to do, something.
   • Say goodbye to long waits at the airport with our new preboarding service.
   • You can say goodbye to your inheritance if you annoy your parents too much!