Editor's "Let it be" (4)
I believe the answer is:
stet
'editor's let it be' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stet that I've seen before include "Notation for let spelling stand, don't change it" , "Notation meaning as is, thus" , "Proofreader's mark that the original text should be kept" , "Printing instruction: "Let it stand"" , "Printer's annotation - let it stand" .)