Irritable talent up for renewal (8)

I believe the answer is:

petulant

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'irritable' is the definition.
('petulant' can be a synonym of 'irritable')

'talent up for renewal' is the wordplay.
'talent up' can be anagrammed to 'PETULANT'.
Though, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for petulant that I've seen before include "Peevish, inclined to complain" , "Fractious, pouty" , "Querulous and demanding" , "Peevish, surly" , "Pouting" .)

I've seen this clue in The Mirror.

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