one's tongue cleaved (clove или glued itself) to the roof of one's mouth

But glancing up suddenly, he found her eyes fixed on him, suspicious and hostile, in silence they stared at each other. His throat turned dry and his tongue glued itself to the roof of his mouth. (A. Saxton, ‘The Great Midland’, ch. 24) — Внезапно взглянув на Стефани, Дейв поймал на себе ее настороженный, враждебный взгляд; они молча смотрели друг на друга. У Дейва вдруг пересохло в горле и язык прилип к гортани.