meaning of "Which something"

[ConfidenceMan]

One concerning which something is said or done.

What does that mean??

Doesn't "which something" mean exactly "what"?

[Yankee]

Hi CM

It's hard to say what that means without additional context.
.

[Alan]

Hi,

I think you need something after 'One' and a comma after 'which'.

Alan
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English as a Second Language
You can read my ESL story Prepositions

[Yankee]

Hi CM

Your "sentence" is not a complete sentence.

It's possible that "concerning which" was used to mean the same thing as "about which". If that is indeed the case, then you probably would not want to place a comma after "which".

But this is all speculation. Without additional context, I'm afraid speculation is all you can reasonably expect.
.

[ConfidenceMan]

Subject
2.
a. One concerning which something is said or done: a subject of gossip.
b. Something that is treated or indicated in a work of art.
c. Music A theme of a composition, especially a fugue.

I got this extract from a definition in a dictionary

[Barb_D]

One (a person, thing, animal, place, etc.)
concerning which (about which)
something (it doesn't matter what - talk, a picture, a satire, a biography) is said or done

It's the "thing" that it's all about.