A necktie knot is a method of tying a necktie to secure it around the collar of a shirt. Different knots vary in complexity, size, and style, allowing individuals to choose one that suits their outfit and occasion. Common types include the Four-in-Hand, Windsor, and Half-Windsor knots, each offering a distinct look. The choice of knot can affect the tie's appearance and how it complements the shirt and suit. For example, the Windsor knot is wider and more formal, while the Four-in-Hand is narrower and more casual. Understanding these knots can enhance one's overall style.