Sworn describes someone who has made a formal, serious promise, usually by taking an oath. When police officers are sworn in, they raise their right hand and promise to uphold the law and protect their community. When witnesses testify in court, they give sworn testimony, meaning they've promised to tell the truth and can face serious consequences for lying.

The word carries weight because it involves a public commitment that creates real responsibility. A sworn statement is an official declaration someone has promised is accurate. When a president takes the oath of office, they become a sworn leader with formal duties.

The word can also describe intense relationships, though with very different meanings. Sworn enemies are people locked in serious, long-lasting conflict, like rival kingdoms in medieval times or competing teams with decades of fierce competition. Conversely, sworn friends are devoted companions who've promised loyalty to each other through thick and thin.

When something is sworn, someone's word and reputation stand behind it, making it far more serious than an ordinary promise.