would have said
I would have said the same thing.
Si yo hubiera sabido la verdad, te la habría dicho.
If I had known the truth, I would have told you.
I would have said yes.
Estoy seguro de que Tom me lo habría dicho si él lo hubiera sabido.
I'm sure Tom would have told me if he had known.
Tom jamás habría dicho eso.
Tom would never have said that.
Se lo habría dicho antes, pero no pesaba que lo entendería.
I would have told him/her earlier, but I didn’t think he/she would understand.
I would have said no.
Esto es lo que yo habría dicho.
This is what I would have said.