חשׁך chshk in the hiphil means "darken, make obscure or conceal" Am 5:8; 8:9.

The participle חֹשֵׁך hoshek is used as a noun and is the word used for the "darkness" of pre-creation and which is contrasted to light in creation in Genesis (Gen 1:2, 4, 5, 18). In Amos it appears in 5:18, 20; on which see the section dealing with the Adonai's Day.