darkeneth
3 occurrences across the corpus
King James Version
Job 38:2
Who is this that darkeneth counsel by words without knowledge?
KJV Apocrypha (Catholic Deuterocanon)
Sirach (Ecclesiasticus) 25:17
The wickedness of a woman changeth her face, and darkeneth her countenance like sackcloth.
OT Pseudepigrapha
Testament of Dan 1:13
For the spirit of anger encompasseth him with the net of deceit, and blindeth his eyes, and through lying darkeneth his mind, and giveth him its own peculiar vision.