Error betraying unconscious thoughts (8,4)

I believe the answer is:

freudian slip

(Other definitions for freudian slip that I've seen before include "Spoken error revealing unconscious thought" , "Unintentional error" , "It betrays unconscious desires" , "Error betraying inner thoughts" , "Slip of the tongue, revealing unconscious thought" .)

I've seen this clue in The Guardian.

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