Backbiting — speaking ill of others behind their back — is silenced by the clear displeasure of those who refuse to tolerate it. This is a practical wisdom: righteous disapproval of gossip creates the social environment in which gossip cannot thrive.
Memory phrase: Reject gossip with a firm look.
Talk about it: What should you do when someone starts saying mean things about a person who is not there?
Prayer: God, help me never speak badly about others behind their backs.