侵入

侵入 means 'invasion' or 'penetration,' typically referring to the act of entering a place without permission, often with negative connotations such as trespassing or military aggression.

The character 侵 (qīn) originally meant 'to invade' or 'to encroach,' while 入 (rù) means 'to enter.' Together, they form a compound that emphasizes unauthorized entry or intrusion into a space or system.

侵入 is commonly used in contexts like cybersecurity (e.g., hacking), territorial disputes, or personal privacy violations. It carries a strong sense of violation and can be used metaphorically, such as in describing an idea or influence that intrudes into someone's mind or life.