Bent type prison reformed (10)

I believe the answer is:

propensity

'bent' is the definition.
(thesaurus)

'type prison reformed' is the wordplay.
'reformed' is an anagram indicator.
'type'+'prison'='typeprison'
'typeprison' anagrammed gives 'PROPENSITY'.

(Other definitions for propensity that I've seen before include "Bent" , "Inclination; tendency" .)

I've seen this clue in The Independent.

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