unstiffened

1832, G. P. R. James, Henry Masterton, or The Adventures of a Young Cavalier, London: Henry Colburn & Richard Bentley, Volume 3, Chapter 8, pp. 180-181, He then approached the body of the Benedictine, who had fallen forward on his face; and after gazing on it for a moment as it lay, he turned it over with his foot, even while the yet unstiffened limbs hung languidly back in the position they had assumed, with the flaccid relaxation of late death.

The booths of the bazaar, which shuts at midday, were contained in a narrow lane, exhibiting beads and mirror-topped boxes from India, the rejected Homburg hats of the whole world, piles of loose turquoises, rows of Gyantse head-dresses, unstiffened and neatly folded, and a peculiar species of scissors whose blades resembled battered table-knives.

1933, Robert Byron, First Russia, Then Tibet, Part II, Chapter 6