spy
US /spaɪ/
UK /spaɪ/

1.
espía, agente secreto
a person who secretly collects and reports information on the activities, movements, and plans of an enemy or competitor
:
•
The government arrested a foreign spy.
El gobierno arrestó a un espía extranjero.
•
She worked as a spy during the war.
Ella trabajó como espía durante la guerra.
1.
espiar, vigilar
to secretly gather information about someone or something
:
•
He was caught spying on his neighbors.
Fue sorprendido espiando a sus vecinos.
•
The agency was accused of spying on its own citizens.
La agencia fue acusada de espiar a sus propios ciudadanos.