Permit’s ambivalent: it legalises ‘to some extent’ (7)

I believe the answer is:

entitle

'permit's' is the definition.
(I've seen this in another clue)

'ambivalent it legalises to some extent' is the wordplay.
'to some extent' indicates the answer is hidden within the clue.
'ENTITLE' is hidden within 'ambivalent it legalises'.

(Other definitions for entitle that I've seen before include "Give a right or authority to" , "Give a right (to someone to do something)" , "Licence" , "Give (someone) rights" , "Warrant" .)

I've seen this clue in The Everyman puzzle in The Observer.

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