A "secret" is information that is kept hidden from others. It can be something personal, like a surprise party, or something more serious, like confidential business data. Secrets can be shared between a few people or kept entirely to oneself. The act of keeping a secret often involves trust, as the person holding the secret relies on others not to reveal it. Secrets can serve various purposes, such as protecting someone's feelings or maintaining privacy. However, they can also lead to complications if they are discovered or if the burden of keeping them becomes too heavy. In some cases, secrets can even have legal implications, especially if they involve sensitive information related to law enforcement or national security.