To appear means to become visible or to come into view. When the sun appears on the horizon each morning, it rises into sight. When a friend appears at your door, they show up where you can see them. A rabbit might disappear into its burrow and then appear again a few moments later.

The word also means to seem or give the impression of being something. If storm clouds appear threatening, they look like they might bring serious weather. If a math problem appears difficult at first glance, it seems hard before you've worked through it. Someone might appear confident even when they feel nervous inside, and a book's cover might make it appear more exciting than it actually is.

In performances and media, appear means to take part or be featured. An actor appears in a movie. A musician appears on stage. A scientist might appear on a news program to explain a discovery.

Notice the difference between appearing to be something and actually being it. A task might appear impossible until you try it and discover you can do it. A person might appear unfriendly when they're really just shy. Things aren't always what they appear to be, which is why looking closer often reveals the truth.