It's wrong to have run off, repressed (7)
I believe the answer is:
stifled
'repressed' is the definition.
(thesaurus)
'it's wrong to have run off' is the wordplay.
'wrong' is an anagram indicator.
'to have' means one lot of letters go next to another.
'run off' becomes 'fled' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'its' is an anagram of 'sti'.
'sti'+'fled'='STIFLED'
Can you help me to learn more?
(Other definitions for stifled that I've seen before include "Suppressed; suffocated" , "Having smothered" .)