Misdeed
/ˌmɪsˈdiːd/
Definition 1 of 1
Pro Tip 1/3Negative Connotation
Misdeed implies a moral judgement and suggests something unethical or immoral has been done. 
The community shunned him for his misdeeds.
Pro Tip 2/3Legal Context
'Misdeed' often relates to actions that break the law, highlighting the seriousness of the act. 
The prosecutor outlined the defendant's misdeeds in court.
Pro Tip 3/3Moral Responsibility
Using 'misdeed' suggests that someone should be held accountable for their harmful actions. 
He was remorseful for his past misdeeds.