say-so

He said he did the work himself, but we have only his say-so that that's what actually happened.他说他独立完成了这项工作，但是实际如何，我们只有他的空口白话。

She left the hospital on the say-so of her doctor.她得到医生许可后出院了。

Nothing was done without his say-so.没有他的准许，什么都没做成。

She has the ultimate say-so on/over what will be taught.关于教学内容，她拥有最终决定权。