stone cold sober

stone-cold sober

Completely sober; not intoxicated to any degree by drugs or alcohol. I'm stone-cold sober, so I'll drive us home. No, I'm not high—I've been stone-cold sober from the day I started working here!See also: sober

stone (cold) sober

mod. absolutely sober. I am stone cold sober, or I will be by morning anyway. See also: cold, sober, stone