Decline to put pronoun in free translation (6)
I believe the answer is:
refuse
'decline' is the definition.
(I know that decline can be written as refuse)
'pronoun in free translation' is the wordplay.
'pronoun' becomes 'us' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in' indicates putting letters inside.
'translation' indicates anagramming the letters.
'free' is an anagram of 'refe'.
'us' going inside 'refe' is 'REFUSE'.
'to put' is the link.
Can you help me to learn more?
(Other definitions for refuse that I've seen before include "Decline to jump (a fence)" , "Turn down - rubbish" , "Junk" , "Turn down; waste" , "Decline to accept - rubbish" .)