Crossword Genius

Mental mistake (5)

Ross

I believe the answer is:

lapse

'mental mistake' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for lapse that I've seen before include "sin" , "Slip-up" , "Fail in duty" , "Fall from grace" , "Fault" .)

I've seen this clue in the New York Times, the Wall Street Journal and the Universal.
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