Nightingale, perhaps, tires from flying (9)

I believe the answer is:

reformist

'nightingale perhaps' is the definition.
(Florence Nightingale)

'tires from flying' is the wordplay.
'flying' is an anagram indicator.
'tires'+'from'='tiresfrom'
'tiresfrom' is an anagram of 'REFORMIST'.

(Other definitions for reformist that I've seen before include "Wanting to change" , "Religious campaigner" .)

I've seen this clue in The Telegraph.

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