Sent it left withholding permit (7)

I believe the answer is:

entitle

I'm a little stuck... Click here to teach me more about this clue!

'permit' is the definition.
(thesaurus)

'sent it left withholding' is the wordplay.
'ENTITLE' is hidden in amongst the letters.
However, I am not sure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for entitle that I've seen before include "Name; empower" , "confer rank" , "Name; enable" , "Licence" , "Allow" .)

I've seen this clue in The Hindu.

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