haberlo sabido

if I had known

→ haber

phrase Rare #31,501

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.

Nadie podría haberlo sabido.

Nobody could have known.

Tom debería haberlo sabido.

Tom should have known.

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.

Debía haberlo sabido.

I should have known.

No podría haberlo sabido.

I couldn't have known.

— Impacto (1981)

Debería haberlo sabido.

I should have known.

— Marty Supreme (2025)

Tendría que haberlo sabido.

I should have known.

Tienen que haberlo sabido desde el principio.

They must have known from the beginning.