How to Say "watchdog" in Spanish
The Spanish word for “watchdog” is “regulador” — C1 level.

Examples
El regulador del mercado financiero anunció nuevas reglas.
The financial market regulator announced new rules.
Las empresas deben cumplir con las normas del regulador ambiental.
Companies must comply with the environmental watchdog's standards.
El regulador de telecomunicaciones está investigando la queja.
The telecommunications regulator is investigating the complaint.
People vs. Institutions
While 'regulador' usually refers to the entire organization or agency, it can sometimes refer to the individual person in charge of that agency.
Gender and People
Mistake: “Calling a female head of an agency 'el regulador'.”
Correction: If referring to a specific woman in this role, use 'la reguladora'. Use 'el regulador' for the institution or a male official.
Related Translations
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