bye
Proposed by a contributor, not yet supported by evidence.
Sense 1
Meaning · English
Goodbye.
Register: colloquial
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
An exclamation of disbelief or dismissal.
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “bye” mean?
Goodbye.
Is “bye” formal or informal?
bye is generally colloquial.