How to Say "well-briefed" in Spanish
The Spanish word for “well-briefed” is “informado” — B1 level. This is a very common word in everyday Spanish.

Examples
Necesitas estar más informado sobre la política local antes de votar.
You need to be more informed about local politics before voting.
Ella es una persona muy informada, sabe de todo.
She is a very knowledgeable person; she knows about everything.
El informe dice que los ciudadanos están bien informados sobre la crisis.
The report says that the citizens are well informed about the crisis.
Gender and Number Agreement
As an adjective, 'informado' must change its ending to match the person or thing it describes: 'informada' (feminine singular), 'informados' (masculine plural), 'informadas' (feminine plural).
Using 'Estar'
We almost always use 'informado' with the verb 'estar' (to be) to describe the state of having knowledge: 'Estamos informados' (We are informed).
Forgetting the Gender Change
Mistake: “La periodista es muy informado.”
Correction: La periodista es muy informad*a*. (The journalist is feminine, so the adjective must end in -a.)
Related Translations
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