/ˈspaɪɪŋˈ/ – noun
Definition: hoạt động gián điệp.
A more thorough explanation: Spying refers to the act of secretly observing or gathering information about a person, group, or organization without their knowledge or consent, typically for the purpose of obtaining confidential or sensitive information. It may involve surveillance, monitoring, or other covert activities aimed at obtaining information that is not publicly available.
Example: The government accused the individual of spying on a foreign country without authorization.