editorial "we"
Definition - The pronoun we when used by a single author to make an editorial statement.
Note: The OED's first cited example of the use of the editorial we in English is from circa 893 CE.

Oxford English Dictionary -
The term's first citation — a Dickens' quote — is from 1841:
"Every rotten-hearted pander who … struts it in the Editorial We once a week."
(Dickens Let. 24 Aug. (1969) II. 368)

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