코가 높다.

The Korean idiom '코가 높다' (koga nopda) literally translates to 'one's nose is high.' This expression is used to describe someone who is arrogant, proud, or haughty. The origin of this idiom can be traced back to the observation of human behavior and facial expressions. In many cultures, the nose, particularly when held high, is associated with a sense of superiority or disdain. When someone looks down on others, they might inadvertently or intentionally tilt their head back, causing their nose to appear higher. Historically, a 'high nose' could also be linked to the concept of status and nobility. In some East Asian societies, a prominent nose was considered a desirable physical trait, sometimes associated with good fortune or a distinguished appearance. However, when this physical characteristic was coupled with an overbearing attitude, it became a symbol of arrogance. Furthermore, the Korean language, like many others, uses body parts in idiomatic expressions to convey abstract concepts. The nose (코, ko) is frequently used in various idioms: '코를 꿰다' (koreul kkwaeda, to lead by the nose, meaning to control someone), '코웃음치다' (ko-useumchida, to snort with laughter, meaning to scoff or sneer), and '코가 납작해지다' (koga napjakhaejida, for one's nose to become flat, meaning to be humbled or disgraced). Therefore, '코가 높다' encapsulates the visual imagery of someone looking down their nose at others, combined with the cultural understanding that such a posture signifies a lack of humility. It has been a part of the Korean lexicon for a considerable period, reflecting a consistent human perception of pride and its outward manifestations.