a. (UN-1 7 b.)
1584. Lodge, Hist. Forbonius & Prisc. (Shaks. Soc.), 96. Alas, unfortunate Ægyptian! whose faithful affections are so immutable, as thy naturall colour is unstainable.
1864. Carlyle, Fredk. Gt., XVII. i. IV. 502. The unstainable fidelity of Weingarten Senior.
1878. Grosart, H. Mores Poems, Mem. Introd. p. xxii/1. A pure white life unstained and unstainable as the light.