要挟 is a transitive verb meaning 'to coerce' or 'to blackmail'—using threats, pressure, or intimidation to force someone to act against their will. The character 要 (yāo) here carries the sense of 'to demand' or 'to require', while 挟 (xié) means 'to hold by force' or 'to take advantage of', often implying physical or psychological leverage. Together, they convey the idea of seizing control through threat, not persuasion or negotiation.

This word is commonly used in formal and serious contexts—such as legal reports, news articles, or discussions about power imbalances—and carries strong negative connotations. It implies an abuse of power or vulnerability (e.g., threatening to expose secrets, harm reputation, or cause physical danger). Unlike milder terms like 'persuade' or 'urge', 要挟 always involves coercion with high stakes and moral disapproval.