Strong's #651: 'aphel (pronounced aw-fale')

from an unused root meaning to set as the sun; dusky:--very dark.

Brown-Driver-Briggs Hebrew Lexicon:

'aphêl

1) gloomy, dark

Part of Speech: adjective

Relation: from an unused root meaning to set as the sun

Usage:

This word is used 1 times:

 

Amos 5:20: "be darkness, and not light? even very dark, and no brightness"