cold sober

I paid mighty close attention to what I was dealt the next hand, and turned down a drink to make sure I was cold sober.

If he'll talk at all, it will be easier for you to get the truth out of him that way than if he were cold sober.

Cold sober, now, his one thought was to get out of the cabin, yet he dared not move.

They will surely (remaining cold sober themselves) drive you to drink.

Never in his life had the physical desire for drink been more acute—but his brain was cold sober.