ténébreux, adj.
(LIEU) deorcful ♦ rēonig ♦ sw(e)art/swært > a.m. swart, got. swarts, v.n. svartr, v.h.a. swarz > all.m. schwarz, v.s. swart, v.fr. swart ♦ þēostor/þēoster/þēostur/þȳster/þēostre/þī(e)stre/þȳstre, v.s. thiustri, v.fr. thiustere ♦ þēostrig/þȳstrig/þrīostrig.