Manipulation refers to the act or practice of controlling, influencing or altering people's behavior, emotions, opinions or circumstances through deceptive or indirect means. It involves using strategies and tactics to gain an advantage over others by exploiting their weaknesses or vulnerabilities. Manipulation can take many forms such as lying, deceiving, withholding information, playing on people's fears or desires, or using flattery to get what one wants from them. It is often seen as a negative behavior that undermines trust and autonomy in relationships.