Child put back Tango in response to strict order (6)
I believe the answer is:
diktat
'strict order' is the definition.
(I've seen this before)
'child put back tango in response' is the wordplay.
'child' becomes 'kid' (synonyms).
'put back' shows that the letters should be reversed in order.
'tango in response' becomes 'tat' (I can't justify this - if you can you should give a lot more credence to this answer).
'kid' backwards is 'dik'.
'dik'+'tat'='DIKTAT'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for diktat that I've seen before include "Harsh order, allowing no discussion" , "Order allowing no opposition" , "Categorical statement" , "Harsh order or decree" , "Forceful order that must be obeyed" .)