Freud really missing regular letters from the country (5)

I believe the answer is:

rural

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'from the country' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for rural that I've seen before include "Arcadian" , "covering the country" , "outside the city?" , "Characteristic of country life" , "Countryfied" .)

I've seen this clue in The Telegraph.

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