Öyle söylemesi onun düşüncesizliğidir.
- It's thoughtless of her to say so.
I have to do it. I'm afraid I have no say-so in the matter.
You are not to go into that room without my say-so.
We're just waiting on your sayso.
... Well, the physicist didn't know what to say, so he said, "We will find the Higgs Boson." ...