Wanting object to get unrestrained stir (9)

I believe the answer is:

thirsting

'wanting' is the definition.
(thirsting is a kind of wanting)

'object to get unrestrained stir' is the wordplay.
'object' becomes 'thing' (an object is a thing or item).
'to get' indicates putting letters inside.
'unrestrained' indicates anagramming the letters.
'stir' with letters rearranged gives 'irst'.
'thing' placed around 'irst' is 'THIRSTING'.

I've seen this clue in The Daily Express.

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