ni siquiera sabía que

didn't even know that

→ ni
phrase Uncommon #22,429
didn't even know that The verb form can change to match the subject and tense, as in “ni siquiera sabes que” (“you don't even know that”).
SP: Ni siquiera sabía que trabajabas aquí.
EN: I didn't even know that you worked here.

De verdad, mamá, ni siquiera sabía que ibas a venir.

Honestly, Mom, I didn't even know you were coming.

— Marty Supremo (2025)

Ni siquiera sabía que tuvieras un hijo.

I didn't even know you had a child.

— Todo sobre mi madre (1999)

Yo ni siquiera sabía que eso existía.

I didn’t even know that existed.

Hasta hace poco ni siquiera sabía que él es mi padre.

Until recently, I didn't even know he was my father.

— Vida solo hay una (2011)

Ni siquiera sabía que Tom conociera a Mary.

I didn't even know Tom knew Mary.

Y yo ni siquiera sabía que las vecinas de mi tío fueran tan hermosas.

And I didn't even know that my uncle's neighbors were so beautiful.

— Kal Ho Naa Ho (2003)

Dan ni siquiera sabía que lo habían manipulado.

Dan didn't even know that it had been tampered with.

Yo ni siquiera sabía que tú sabías.

I didn't even know you knew.

Ni siquiera sabía que eras sexualmente activa.

I didn't even know you were sexually active.

— Juno: Crecer, correr y tropezar (2007)

Te estoy diciendo que ni siquiera sabía que las tenía.

I'm telling you, I didn't even know I had them.

— Елена (2011)

Ni siquiera sabía que lo hacían en verde.

I didn't even know they did it in green.

— El hombre de la tierra (2007)

Y es una sensación que ni siquiera sabía que era posible.

And it's a feeling I didn't even know was possible.

— La Máquina: The Smashing Machine (2025)