אָפֵל‎ (ʼâphêl｜aw-fale'｜adjective｜gloomy)
[Heb] אָפֵל‎ ETCBC: אָפֵל‎ (subs｜darkness) OSHL: a.fb.ac TWOT: 145b GK: H695 Greek: γνόφος
Derivation: from an unused root meaning to set as the sun;
Strong's: dusky
KJV: very dark.