Felt raunchy turning fifty! (4-7)

I believe the answer is:

half-century

'fifty' is the definition.
(a half-century can mean fifty)

'felt raunchy turning' is the wordplay.
'turning' indicates an anagram.
'felt'+'raunchy'='feltraunchy'
'feltraunchy' anagrammed gives 'HALF-CENTURY'.

(Other definitions for half-century that I've seen before include "good score" , "50" .)

I've seen this clue in The Times.

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