no sabía nada

didn't know anything

→ no
phrase Uncommon #15,577
didn't know anything Uses the imperfect tense of saber to describe a lack of knowledge in the past. Nada means “anything” after no, creating a negative expression.
SP: Yo no sabía nada sobre la reunión.
EN: I didn't know anything about the meeting.

Hasta ayer no sabía nada de eso.

Until yesterday I knew nothing about that.

Tom no sabía nada.

Tom didn't know anything.

No sabía nada de eso.

I didn't know anything about that.

— El experimento (2001)

El hombre, del cual no sabía nada, me conocía bien.

The man, about whom I knew nothing, knew me well.

Cari, mi amor, pero hacía un montón que no sabía nada de vos.

Cari, my love—it’s been ages since I heard from you.

— Diarios de motocicleta (2004)

Si la señorita que no sabía nada.

If the young lady didn't know anything.

— Perdición (1944)

Tom no sabía nada acerca de lo que estaba pasando.

Tom had no idea what was going on.

No sabía nada de él.

I didn't know anything about him.

Ella les dijo que no sabía nada.

She told them she didn't know anything.

— Hunting Season (2025)

Tom fingía que no sabía nada de Mary.

Tom pretended he knew nothing about Mary.

Dan dijo que no sabía nada de ningún asesinato.

Dan said he knew nothing about any murder.

Tom no sabía nada de ello.

Tom knew nothing about it.

No sabía nada.

I didn't know anything.

Tom dijo que no sabía nada al respecto.

Tom said he didn’t know anything about it.

Es testigo de que yo no sabía nada.

He is a witness to the fact that I knew nothing.

— Las diabólicas (1955)

Yo no sabía nada de ella.

I knew nothing about her.

— Moscú no cree en las lágrimas (1980)

Sí, pero yo no sabía nada.

Yes, but I didn't know anything.

— Dil se.. (1998)

Hace tiempo que nos conocemos, pero yo no sabía nada de usted.

We've known each other for a while, but I didn't know anything about you.

— Solaris (1972)

Tom no sabía nada acerca del pasado de Mary.

Tom didn't know anything about Mary's past.

No sabía nada sobre eso.

I didn't know anything about that.

Explicó que no sabía nada sobre el asunto.

He explained that he knew nothing about the matter.