Gently reprove a doctor in broken Danish (8)
I believe the answer is:
admonish
'gently reprove' is the definition.
(I've seen this before)
'a doctor in broken danish' is the wordplay.
'a doctor' becomes 'mo' (medical officer).
'in' indicates putting letters inside.
'broken' is an anagram indicator.
'danish' anagrammed gives 'adnish'.
'mo' going into 'adnish' is 'ADMONISH'.
(Other definitions for admonish that I've seen before include "Scold, wag the finger at" , "criticise" , "Firmly reprimand" , "Chide, reprove" , "Mildly reprove" .)