haberlo sabido

if I had known

→ haber
phrase Rare #31,683
if I had known Used to refer to a past situation that you wish had gone differently. It often appears in constructions like "de haberlo sabido" or after modal verbs, as in "debí haberlo sabido."
SP: De haberlo sabido, te habría llamado.
EN: If I had known, I would have called you.

Debería haberlo sabido.

I should have known.

— Marty Supreme (2025)

No podría haberlo sabido.

I couldn't have known.

— Impacto (1981)

Debía haberlo sabido.

I should have known.

Tendría que haberlo sabido.

I should have known.

Nadie podría haberlo sabido.

Nobody could have known.

Tom debería haberlo sabido.

Tom should have known.

Tienen que haberlo sabido desde el principio.

They must have known from the beginning.

De haberlo sabido no te habría atrapado la mano con la puerta.

Had I known, I wouldn't have caught your hand in the door.

— American Gangster (2007)

Debí haberlo sabido.

I should have known.