a. 1586. Sidney, Arcadia, III. xv. Falsly accounting an unflexible anger, a couragious constancie.
1611. Speed, Hist. Gt. Brit., IX. viii. § 44. 498. Seeing the Pope vnflexible, and vnsensible of so many Christians calamitie.
1677. Gilpin, Demonol. (1867), 152. Some spirits are unfixed and volatile…. Others are tenacious and unflexible.
