surveil

• Verbe signifiant observer attentivement ou suivre quelqu'un ou quelque chose, souvent secrètement, dans le but de recueillir des informations.

A verb meaning to closely observe or monitor someone or something, often secretly, for the purpose of gathering information.

1. Keep under surveillanceC1formal

   To closely watch or monitor someone or something, often for security or investigative purposes.

   surveiller

   • The police surveilled the suspect for several weeks.
   • Private investigators often surveil individuals for insurance claims.
   • The government agency surveilled the area using drones.

   Synonymesmonitorobserveshadowtailtrackwatch