Be dishonest, don’t be upstanding (3)

I believe the answer is:

lie

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'be dishonest' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for lie that I've seen before include "Commit perjury" , "Be prone - misrepresent the facts" , "Tell tales" , "Prevaricate or recline" , "buried" .)

I've seen this clue in The Times.

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