take one at word

take (one) at (one's) word

To accept what one says without further verifying or investigating. Why some people take that pundit at his word is beyond me. He clearly has an ulterior motive. You're right to be wary, but, in this case, I think we can take John at his word. He's just trying to help.
See also: take, word

take one at one's word

to believe what someone says and act accordingly. She told me to go jump in the lake, and I took her at her word. You shouldn't take her at her word. She frequently says things she doesn't really mean.
See also: one, take, word