I don't know, I ignore
Ignoro cómo hacerlo.
I don't know how to do it.
Lo ignoro.
I don't know.
— Solaris (1972)
Ignoro si es él español o argentino.
I don't know if he's Spanish or Argentinian.
Ignoro cuánto rato estuve caminando.
I don't know how long I was walking.
Yo tú lo ignoro.
I ignore you.
Simplemente lo ignoro a Tomás.
I simply ignore Tomás.
Pero ignoro una cosa.
But there is one thing I do not know.
— Tres colores: Azul (1993)
Ignoro cuánto tardaré.
I don't know how long it will take me.