You French, cheeky about hollow depravity (9)

I believe the answer is:

turpitude

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'depravity' is the definition.
(I know that depravity can be written as turpitude)

'you french cheeky about hollow' is the wordplay.
'you french' becomes 'tu' ('you' in French).
'cheeky' becomes 'rude' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'about' indicates putting letters inside.
'hollow' becomes 'pit' (pit is a kind of hollow).
'rude' placed around 'pit' is 'rpitude'.
'tu'+'rpitude'='TURPITUDE'

Can you help me to learn more?

(Other definitions for turpitude that I've seen before include "Depravity, wickedness" , "Baseness, depravity" , "Depraved or wicked behaviour" , "corruption" .)

I've seen this clue in The Telegraph.

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