A peasant is curt in discomposure (6)

I believe the answer is:

rustic

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'a peasant' is the definition.
(I've seen this before)

'is curt in discomposure' is the wordplay.
'is curt' anagrams to 'RUSTIC'.
But, I'm not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for rustic that I've seen before include "Rural, country" , "Of the countryside and country folk" , "Country bumpkin" , "unrefined" , "Simple and unsophisticated as of the countryside" .)

I've seen this clue in The Globe and Mail.

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