An "impostor" is someone who pretends to be someone else or takes on a false identity. This can happen in various situations, such as in social settings or even in professional environments. Impostors often feel like they are deceiving others, and they may worry about being discovered. This feeling can lead to anxiety and self-doubt. The term "impostor syndrome" refers to the internal struggle many people face, where they doubt their accomplishments and fear being exposed as a fraud. Even successful individuals, like scientists or artists, can experience this feeling, believing they don't deserve their achievements. Understanding impostor syndrome can help people recognize their worth and build confidence.