Short game not up to par? That's disconcerting! (3-7)

I believe the answer is:

off-putting

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

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

(Other definitions for off-putting that I've seen before include "Disconcerting" , "Discouraging" .)

I've seen this clue in the Sydney Morning Herald.

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