Where we fall if we do wrong? (6)
I believe the answer is:
offend
'do wrong?' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for offend that I've seen before include "Violate the law" , "Commit an illegal act" , "Insult - act criminally" , "Distress" , "Cause displeasure to, insult" .)