- handeling van spioneren
- the act of keeping a secret watch for intelligence purposes
- keeping a secret or furtive watch
- Are you spying on me?
- I saw you spying on Tom.
- He was never officially charged with spying.
- Spying on gangsters was a dangerous venture.
- I think my boyfriend is spying on my emails.
- This company has been spying on its employees.
- She is an old hand at spying on tax evaders.