We often colloquially use the phrase so long to say goodbye. For eg. So long, we'll see you next week or He said so long and left.
What is the origin of this phase? Rather, how did it come into being? I would also like to know the circumstances under which its usage would be deemed appropriate.
EDIT: Is this phrase some sort of corruption of any phrase in some other language(looking at the answers) or it has some meaning to it in English Language as well?
Best Answer
The OED gives a first use in 1865. No explanation is given, but comparison is made with German so lange. It is a purely colloquial expression, and one that seems to be limited to particular idiolects. I wouldn’t use it myself. It may be more common in American than in British English.