Appearance is how something or someone looks on the outside. When you describe someone's appearance, you might mention their height, hair color, clothing, or facial features. A building's appearance includes its shape, color, and architectural style.

The word also refers to the act of showing up or becoming visible. When a famous author makes an appearance at a bookstore, she arrives to meet readers and sign books. A surprise guest might make an unexpected appearance at a birthday party. In a story, a character's first appearance is when they enter the narrative.

People often say “appearances can be deceiving” because the outside doesn't always match what's inside. A dilapidated house might have a beautiful interior. A nervous student might seem confident during a presentation. A small, lightweight suitcase might appear easy to carry until you discover it's packed with heavy books.

Sometimes appearance matters, like when you choose clothes for a special event. But the scruffiest dog at the shelter might become the most loyal companion. The worn, plain book at the library sale might contain the most captivating adventure.