frozen stiff
From Longman Dictionary of Contemporary Englishfrozen stifffrozen stiffa) extremely cold Goodness, your hands are frozen stiff! b) cloth that is frozen stiff is hard because the water in it has frozen → stiffExamples from the Corpusfrozen stiff• And they'd pull her dress off her, and it was frozen stiff.• He was frozen stiff in the weeds beside the track.