stiff upper lip

The phrase "stiff upper lip" is an idiom that refers to the characteristic of maintaining a calm and composed demeanor, especially in the face of adversity, difficulties, or emotional turmoil. It suggests the act of suppressing one's emotions and putting on a brave front, often in order to avoid showing vulnerability or weakness. It is commonly associated with British culture and is often used to describe a person's ability to endure hardship or maintain a sense of dignity amidst challenging situations.