Lashon hara literally means evil tongue. The teaching is much sharper than the literal translation. Lashon hara refers to speaking negatively about another person — even if what you are saying is true. Slander, gossip, careless mention of someone's failure to a third party who did not need to know — all of it falls under the prohibition. The Hafetz Hayim, the great codifier of these laws, said lashon hara kills three people: the speaker, the listener, and the person being spoken about.
Why such severity? Because reputation is the most fragile asset any person has. It takes years to build and seconds to damage. Once a negative impression is planted in someone's mind, it cannot be unplanted — even if the original speaker later admits the statement was unfair or incomplete. The damage is structural, not informational. The listener now has a frame through which they see the person being discussed, and the frame distorts every future interaction.
For leaders, the application is double. First, do not speak lashon hara about competitors, former partners, employees who left, or anyone else. The temptation is enormous — venting feels good, gossip feels social, criticism feels intelligent. All of it is poison. Every word that diminishes another person diminishes the speaker more than the subject. Second, do not tolerate it in your team. The culture of an organization is mostly the cumulative effect of how its people speak when leadership is not in the room.
The modern internet amplifies all of this by orders of magnitude. A tweet, a review, a forum post, a quote in an article can permanently shape how a person is perceived by millions who have never met them. The traditional laws of lashon hara were written assuming you could undo damage by going to each listener and correcting the record. That option no longer exists. Which means the original prohibition matters more now than at any point in history. Guard your tongue. Build your reputation by what you do, not by what you say about others.
