Gentle German's denial overturned in court decision (7)
I believe the answer is:
lenient
'gentle' is the definition.
(thesaurus)
'german's denial overturned in court decision' is the wordplay.
'german's denial' becomes 'nein' (I am not sure about this - if you are sure you should believe this answer much more).
'overturned' says the letters should be written in reverse.
'in' is an insertion indicator.
'court decision' becomes 'let' (I've seen this in another clue).
'nein' written backwards gives 'nien'.
'nien' placed within 'let' is 'LENIENT'.
Can you help me to learn more?
(Other definitions for lenient that I've seen before include "Light" , "Easy, soft" , "Mild and tolerant" , "Tolerant, rather than strict" , "Soft on the rules" .)