spy

/spai/
Học thuật
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spy

A spy uses a small camera to photograph a document.

Definition
  1. Noun:

    • A secret watcher; someone who secretly collects information: A person who is employed by a government or organization to obtain secret information about another country, organization, or person.
    • A secret agent: A person involved in espionage, often working for a state or company to gather intelligence on enemies or competitors.
  2. Verb:

    • To secretly collect sensitive information; to engage in espionage: To act as a spy; to obtain secret information covertly.
    • To catch sight of; to see or notice: To observe or perceive someone or something, often suddenly or from a distance.
    • To watch, observe, or inquire secretly: To examine or investigate something in a covert manner.
Usage Examples
  • Noun:

    • The spy was caught trying to steal classified documents.
    • He worked as a corporate spy for a rival technology firm.
  • Verb (to engage in espionage):

    • She was accused of spying for a foreign power.
    • The agent spied on the enemy's communications.
  • Verb (to catch sight of):

    • I spied a rare bird in the tree from my window.
    • He spied his friend across the crowded room.
  • Verb (to watch secretly):

    • The detective spied on the suspect's house for a week.
    • Children love to spy on their parents from the staircase.
Advanced Usage
  • "to spy out": To explore or examine an area secretly to gain information.

    • The scouts were sent to spy out the land before the army advanced.
  • "to spy on someone's movements": To secretly monitor and track a person's activities.

    • The journalist felt she was being spied on by government agents.
Variants and Related Words
  • Espionage (n): The practice of spying or using spies to obtain information.

    • The novel is a thriller about international espionage.
  • Spyware (n): Software that secretly monitors and collects information from a computer.

    • You should install antivirus software to protect against spyware.
  • Spymaster (n): A person who directs or controls a network of spies.

    • The spymaster coordinated the intelligence operation from a secure location.
Synonyms
  • Noun: Agent, operative, informant, mole, undercover agent.
  • Verb (to watch): Observe, monitor, surveil, scout.
  • Verb (to see): Spot, glimpse, notice, discern.
Related Phrasal Verbs
  • Spy on: To watch someone secretly to discover information about them.

    • The company was spying on its competitors' research.
  • Spy out: To discover or find out something by careful observation or investigation.

    • They hoped to spy out the weaknesses in the enemy's defenses.
Related Idioms
  • A spy in the camp: A person within a group who is secretly working for an opposing group.

    • The CEO feared there was a spy in the camp leaking plans to the press.
  • To spy with the naked eye: To see something without the aid of any device like binoculars or a telescope.

    • You can spy the island with the naked eye on a clear day.
spy

A spy uses a small camera to photograph a document.

Noun
  1. a secret watcher; someone who secretly watches other people
    • my spies tell me that you had a good time last night
  2. (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
Verb
  1. secretly collect sensitive or classified information; engage in espionage
    • spy for the Russians
  2. catch sight of; to perceive with the eyes
    • he caught sight of the king's men coming over the ridge
  3. watch, observe, or inquire secretly
  4. catch sight of