an expression of good wishes when parting or at the end of a conversation, a farewell

say goodbye to, kiss goodbye to, wave goodbye

Formal and Informal Expressions of goodbye

In different contexts, you can replace 'goodbye' with suitable alternatives. In a more formal setting, 'farewell' is apt. In informal speech or writing, 'bye, see ya' is a commonplace synonym.

goodbye: Explore its Definition & Usage

goodbye Definition

1an expression of good wishes when parting or at the end of a conversation
2a farewell

Using goodbye: Examples

Take a moment to familiarize yourself with how "goodbye" can be used in various situations through the following examples!

Example
She said goodbye and left the room.
Example
It's time to say goodbye to our guests.
Example
I hate saying goodbye to my friends.
Example
He waved goodbye from the train.

goodbye Synonyms and Antonyms

Synonyms for goodbye

Phrases with goodbye

say goodbye to
to give up or lose something or someone
Example
You'll have to say goodbye to your free time once the baby arrives.
kiss goodbye to
to lose or give up something, often due to a mistake or bad decision
Example
By not studying for the exam, he kissed goodbye to his chance of getting an A.
wave goodbye
to make a waving gesture with one's hand as a sign of farewell
Example
As the ship sailed away, we stood on the dock and waved goodbye.

Origins of goodbye

from 'God be with ye'

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Summary: goodbye in Brief

'Goodbye' [ɡʊdˈbaɪ] is an interjection or noun used to express good wishes when parting or ending a conversation. It is synonymous with 'farewell' and 'adios.' The phrase 'say goodbye to' means to give up or lose something or someone, while 'kiss goodbye to' implies losing or giving up something due to a mistake or bad decision. 'Wave goodbye' is a gesture of farewell.