Vulnerability means being open to harm, damage, or emotional hurt. When something is vulnerable, it can be affected or wounded more easily than something protected or defended.

A castle with tall walls and a moat is less vulnerable to attack than a village on an open plain. A newly planted seedling is vulnerable to frost, strong winds, and hungry rabbits. In your body, your eyes are vulnerable organs that you protect by blinking and squinting, while your bones are protected by muscles and skin.

The word also describes emotional openness. When you share your true feelings with someone, you make yourself vulnerable because they could dismiss or mock what matters to you. Admitting you're scared before a big presentation, telling a friend you miss them, or asking for help with something difficult: these all require vulnerability because you're letting someone see you as you really are, revealing your authentic thoughts and feelings.

Many people find vulnerability uncomfortable because it means accepting that you might get hurt. But without some vulnerability, deep friendships can't form. You can't become close to someone if you never let them see what you actually think and feel. Scientists who share their unfinished research make themselves vulnerable to criticism, but that openness helps science advance through honest discussion.

Understanding your own vulnerabilities, whether physical or emotional, helps you protect what needs protecting while still staying open to meaningful connections and experiences.