Discourtesy

: Experts like A.G. Gardiner note that bad manners can be infectious; one person's rudeness often triggers a defensive, rude response in another [22].

Using "please" and "thank you" acts as "oil" for the machine of life, keeping interactions running smoothly even when others are abrasive [22]. discourtesy

Experts at CNBC suggest using redirection: "You seem frustrated. Is something wrong?" to shift the focus from their behavior to their internal state [8]. : Experts like A

: Being late for meetings, loud phone conversations in public, or failing to acknowledge small favors like someone letting you merge in traffic [11, 28]. loud phone conversations in public