ḥāšax חָשַׁךְ ‘to darken’ (Hebrew)

Etymology^?: a primitive root

ḥāšax v
1) to be or become dark, grow dim, be darkened, be black, be hidden
 1a) (Qal)
  1a1) to be or grow dark
  1a2) to have a dark colour
  1a3) to grow dim
 1b) (Hiphil)
  1b1) to make dark, cause to be dark
  1b2) to hide, conceal
  1b3) to obscure, confuse (fig.)