Crossword Genius

Are there such penalties for being difficult? (5)

Ross

I believe the answer is:

stiff

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'being difficult?' is the definition.
(I've seen this before)

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

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(Other definitions for stiff that I've seen before include "Difficult" , "Not giving" , "Formal" , "Frigid" , "Unyielding" .)

I've seen this clue in the Evening Standard.
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